rename project to MultiforaDB

Prose and benchmark tables use MultiforaDB; the binary, the CLI usage line, the log-message prefix and the default database file use multiforadb. Two consequences worth noting: - build.zig.zon's fingerprint is derived from the package name, so it had to change with it (Zig refuses to build otherwise). A consumer pinning this package by fingerprint needs updating. - the default --db path is now multiforadb.log, and getCmdLineOpts reports it as dbpath. An existing mongo-lite.log has to be passed explicitly with --db. The e2e harness abbreviated the old name as ML_; that is now MFDB_, including the documented ML_BIN override (MFDB_BIN) and the scratch file names. MD_ (mongod) is untouched. compare-run.sh spawned the server by absolute path under a sandbox/mongo-lite directory that no longer exists; that block already runs from tests/e2e, so it uses a relative path now. The archived reports under tests/e2e/results/ keep the old name: they record what the old binary measured.
2026-08-03 12:35:01 +03:00
parent ac464f2b92
commit d4c9b04f21
20 changed files with 129 additions and 129 deletions
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# mongo-lite
+# MultiforaDB

 A lightweight, embedded MongoDB-compatible document database written in
 Zig 0.16. Like SQLite, it stores everything in a single file; unlike SQLite,
@@ -11,7 +11,7 @@ driver, PyMongo — connect over TCP and just work.
 zig build                # build the server
 zig build test           # run the unit test suite

-zig-out/bin/mongo-lite --port 27017 --db data.log --compact-threshold 256m
+zig-out/bin/multiforadb --port 27017 --db data.log --compact-threshold 256m

 # in another terminal:
 mongosh --port 27017
@@ -181,27 +181,27 @@ the `tests/e2e/big.js` harness (12-core/32 GB Mac):
 ## Performance vs MongoDB

 `tests/e2e/compare-run.sh` runs the same driver workload (1 GB, 65,536 ×
-16 KB docs, every write durable — mongo-lite fsyncs per command, mongod
+16 KB docs, every write durable — MultiforaDB fsyncs per command, mongod
 runs with `j: true`) against each server and prints a side-by-side table.
 With the ReleaseFast default build (MongoDB 8.3.7 on the same Mac):

-| benchmark | mongo-lite | mongodb | winner |
+| benchmark | MultiforaDB | mongodb | winner |
 |---|---|---|---|
-| insertOne (sequential) | 0.20 ms | 4.7 ms | **mongo-lite ×24** |
-| bulk insert (insertMany) | 752 MB/s | 744 MB/s | mongo-lite |
-| createIndex({k: 1}) | 67 ms | 76 ms | **mongo-lite** |
-| countDocuments({}) | 2.6 ms | 11.2 ms | **mongo-lite ×4** |
-| findOne({_id}) | 0.45 ms | 0.65 ms | **mongo-lite** |
-| findOne indexed | 0.54 ms | 4.6 ms | **mongo-lite ×8** |
+| insertOne (sequential) | 0.20 ms | 4.7 ms | **MultiforaDB ×24** |
+| bulk insert (insertMany) | 752 MB/s | 744 MB/s | MultiforaDB |
+| createIndex({k: 1}) | 67 ms | 76 ms | **MultiforaDB** |
+| countDocuments({}) | 2.6 ms | 11.2 ms | **MultiforaDB ×4** |
+| findOne({_id}) | 0.45 ms | 0.65 ms | **MultiforaDB** |
+| findOne indexed | 0.54 ms | 4.6 ms | **MultiforaDB ×8** |
 | range-scan count | 13.7 ms | 12.6 ms | mongodb ×1.1 |
 | sort + limit(20), on `_id` | 2.3 ms | 2.0 ms | mongodb ×1.1 |
 | sort + limit(20), indexed field | 1.0 ms | — | — |
-| aggregate $group | 8.1 ms | 12.3 ms | **mongo-lite** |
-| updateOne({_id}) | 0.15 ms | 0.19 ms | **mongo-lite** |
-| updateMany (65 docs) | 1.7 ms | 6.1 ms | **mongo-lite ×3.6** |
-| deleteOne + insert | 0.50 ms | 4.9 ms | **mongo-lite ×10** |
-| server RSS | 539 MB | 1.3 GB | **mongo-lite ×2.4** |
-| kill -9 → reopen | 0.8 s | 1.3 s | **mongo-lite** |
+| aggregate $group | 8.1 ms | 12.3 ms | **MultiforaDB** |
+| updateOne({_id}) | 0.15 ms | 0.19 ms | **MultiforaDB** |
+| updateMany (65 docs) | 1.7 ms | 6.1 ms | **MultiforaDB ×3.6** |
+| deleteOne + insert | 0.50 ms | 4.9 ms | **MultiforaDB ×10** |
+| server RSS | 539 MB | 1.3 GB | **MultiforaDB ×2.4** |
+| kill -9 → reopen | 0.8 s | 1.3 s | **MultiforaDB** |
 | db on disk | 97 MB | 91 MB | mongodb |

 The engine now holds every document as canonical BSON bytes in a
--- a/build.zig
+++ b/build.zig
@@ -23,7 +23,7 @@ pub fn build(b: *std.Build) void {
    });

    const exe = b.addExecutable(.{
-        .name = "mongo-lite",
+        .name = "multiforadb",
        .root_module = exe_mod,
    });
    b.installArtifact(exe);
@@ -31,7 +31,7 @@ pub fn build(b: *std.Build) void {
    const run_cmd = b.addRunArtifact(exe);
    run_cmd.step.dependOn(b.getInstallStep());
    if (b.args) |args| run_cmd.addArgs(args);
-    const run_step = b.step("run", "Run mongo-lite server");
+    const run_step = b.step("run", "Run multiforadb server");
    run_step.dependOn(&run_cmd.step);

    const test_mod = b.createModule(.{
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -1,7 +1,7 @@
 .{
-    .name = .mongo_lite,
+    .name = .multiforadb,
    .version = "0.0.1",
    .minimum_zig_version = "0.16.0",
    .paths = .{""},
-    .fingerprint = 0xcca51d85af632c24,
+    .fingerprint = 0x8305abefdc9db3e3,
 }
--- a/src/assert.zig
+++ b/src/assert.zig
@@ -17,14 +17,14 @@ const std = @import("std");

 /// Panic unless `ok`. Active in every optimize mode; see the module comment.
 pub fn assert(ok: bool) void {
-    if (!ok) @panic("mongo-lite: assertion failed");
+    if (!ok) @panic("multiforadb: assertion failed");
 }

 /// Panic unless `ok`, naming the invariant that broke. Prefer this where the
 /// condition alone does not say what went wrong -- the message lands in the
 /// crash output, which may be all an operator has to go on.
 pub fn assert_msg(ok: bool, comptime message: []const u8) void {
-    if (!ok) @panic("mongo-lite: assertion failed: " ++ message);
+    if (!ok) @panic("multiforadb: assertion failed: " ++ message);
 }

 test "assert passes on true and is callable in every mode" {
--- a/src/commands.zig
+++ b/src/commands.zig
@@ -170,7 +170,7 @@ pub fn dispatch(ctx: *Context, msg: *wire.Message, reply: *wire.Reply) !void {
        // rather than turning an applied write into an error the client retries.
        if (ctx.engine.take_compact()) {
            ctx.engine.compact() catch |err| {
-                std.debug.print("mongo-lite: compaction failed: {s}\n", .{@errorName(err)});
+                std.debug.print("multiforadb: compaction failed: {s}\n", .{@errorName(err)});
                ctx.engine.request_compact();
            };
        }
@@ -226,7 +226,7 @@ fn cmd_ping(_: *Context, _: *wire.Message, reply: *wire.Reply) !void {

 fn cmd_build_info(_: *Context, _: *wire.Message, reply: *wire.Reply) !void {
    try reply.put("version", .{ .string = "4.4.0" });
-    try reply.put("gitVersion", .{ .string = "mongo-lite" });
+    try reply.put("gitVersion", .{ .string = "multiforadb" });
    try reply.put("versionArray", .{ .array = try int_array(reply, &.{ 4, 4, 0, 0 }) });
    try reply.put("openssl", .{ .doc = &.{} });
    try reply.put("loaderFlags", .{ .string = "" });
@@ -283,7 +283,7 @@ fn cmd_host_info(ctx: *Context, _: *wire.Message, reply: *wire.Reply) !void {

 fn cmd_get_cmd_line_opts(_: *Context, _: *wire.Message, reply: *wire.Reply) !void {
    const argv = try reply.arena_alloc().alloc(bson.Pair, 2);
-    argv[0] = .{ .key = "dbpath", .value = .{ .string = "mongo-lite.log" } };
+    argv[0] = .{ .key = "dbpath", .value = .{ .string = "multiforadb.log" } };
    argv[1] = .{ .key = "port", .value = .{ .int32 = 27017 } };
    try reply.put("argv", .{ .array = &.{} });
    try reply.put("parsed", .{ .doc = argv });
--- a/src/db.zig
+++ b/src/db.zig
@@ -986,7 +986,7 @@ pub const Engine = struct {
        // epilogue called us.
        self.request_compact();
        std.debug.print(
-            "mongo-lite: compaction gave up after {d} attempts (concurrent writes); will retry\n",
+            "multiforadb: compaction gave up after {d} attempts (concurrent writes); will retry\n",
            .{attempt_max},
        );
    }
@@ -1045,7 +1045,7 @@ pub const Engine = struct {
        while (doc_it.next()) |doc_entry| {
            ix.append_doc_entries(self.gpa, coll.doc_bytes(doc_entry.value_ptr.*), doc_entry.key_ptr.*) catch |err| switch (err) {
                error.ParallelArrays => {
-                    std.debug.print("mongo-lite: WARNING: index '{s}' cannot index an existing document; entry skipped\n", .{ix.name});
+                    std.debug.print("multiforadb: WARNING: index '{s}' cannot index an existing document; entry skipped\n", .{ix.name});
                    continue;
                },
                else => return err,
@@ -1053,7 +1053,7 @@ pub const Engine = struct {
        }
        // Tolerated, not enforced: the database must always open.
        if (try ix.finish_bulk(self.gpa, false)) {
-            std.debug.print("mongo-lite: WARNING: unique index '{s}' has duplicate keys in existing data; duplicates not enforced for existing documents\n", .{ix.name});
+            std.debug.print("multiforadb: WARNING: unique index '{s}' has duplicate keys in existing data; duplicates not enforced for existing documents\n", .{ix.name});
        }
    }

@@ -1103,7 +1103,7 @@ fn apply_record(ctx: *anyopaque, record: storage.Record, doc: *bson.Document) an
    switch (record.type) {
        storage.record_type_index_create => {
            self.register_index_from_spec(coll, doc) catch |err| {
-                std.debug.print("mongo-lite: index create record failed to apply: {s}\n", .{@errorName(err)});
+                std.debug.print("multiforadb: index create record failed to apply: {s}\n", .{@errorName(err)});
                return;
            };
            return;
@@ -1121,7 +1121,7 @@ fn apply_record(ctx: *anyopaque, record: storage.Record, doc: *bson.Document) an
    }

    const id_value = doc.get("_id") orelse {
-        std.debug.print("mongo-lite: log record without _id, skipping\n", .{});
+        std.debug.print("multiforadb: log record without _id, skipping\n", .{});
        return;
    };
    const id_key = try bson.serialize_value(self.gpa, id_value);
--- a/src/lib.zig
+++ b/src/lib.zig
@@ -1,4 +1,4 @@
-// mongo-lite core library. Public entry point for tests and the server.
+// multiforadb core library. Public entry point for tests and the server.

 pub const assert = @import("assert.zig");
 pub const bson = @import("bson.zig");
--- a/src/main.zig
+++ b/src/main.zig
@@ -2,12 +2,12 @@ const std = @import("std");
 const mongo = @import("mongo");

 const usage =
-    \\mongo-lite — lightweight MongoDB-compatible document database
+    \\MultiforaDB — lightweight MongoDB-compatible document database
    \\
-    \\usage: mongo-lite [options]
+    \\usage: multiforadb [options]
    \\  --port <n>    listen port (default 27017)
    \\  --bind <ip>   bind address (default 127.0.0.1)
-    \\  --db <path>   database file (default mongo-lite.log)
+    \\  --db <path>   database file (default multiforadb.log)
    \\  --ttl-sweep-secs <n>
    \\                seconds between TTL index sweeps (default 60, 0 disables)
    \\  --compact-threshold <bytes>
@@ -47,7 +47,7 @@ fn parse_size_suffix(v: []const u8) ?u64 {
 pub fn main(init: std.process.Init) !void {
    var port: u16 = 27017;
    var bind_ip: []const u8 = "127.0.0.1";
-    var db_path: []const u8 = "mongo-lite.log";
+    var db_path: []const u8 = "multiforadb.log";
    var ttl_sweep_secs: i64 = 60;
    var compact_threshold: u64 = 16 * 1024 * 1024;

@@ -58,7 +58,7 @@ pub fn main(init: std.process.Init) !void {
        if (std.mem.eql(u8, arg, "--port")) {
            const v = it.next() orelse return error.MissingValue;
            port = std.fmt.parseInt(u16, v, 10) catch {
-                std.debug.print("mongo-lite: invalid port '{s}'\n", .{v});
+                std.debug.print("multiforadb: invalid port '{s}'\n", .{v});
                return error.InvalidPort;
            };
        } else if (std.mem.eql(u8, arg, "--bind")) {
@@ -72,17 +72,17 @@ pub fn main(init: std.process.Init) !void {
            // only thing parseInt would otherwise let through.
            ttl_sweep_secs = std.fmt.parseInt(i64, v, 10) catch -1;
            if (ttl_sweep_secs < 0) {
-                std.debug.print("mongo-lite: invalid ttl sweep interval '{s}'\n", .{v});
+                std.debug.print("multiforadb: invalid ttl sweep interval '{s}'\n", .{v});
                return error.InvalidTtlSweepSecs;
            }
        } else if (std.mem.eql(u8, arg, "--compact-threshold")) {
            const v = it.next() orelse return error.MissingValue;
            const parsed = parse_size_suffix(v) orelse {
-                std.debug.print("mongo-lite: invalid compact threshold '{s}'\n", .{v});
+                std.debug.print("multiforadb: invalid compact threshold '{s}'\n", .{v});
                return error.InvalidCompactThreshold;
            };
            if (parsed < 1024 * 1024) {
-                std.debug.print("mongo-lite: compact threshold must be at least 1m\n", .{});
+                std.debug.print("multiforadb: compact threshold must be at least 1m\n", .{});
                return error.InvalidCompactThreshold;
            }
            compact_threshold = parsed;
@@ -90,7 +90,7 @@ pub fn main(init: std.process.Init) !void {
            try std.Io.File.writeStreamingAll(.stdout(), init.io, usage);
            return;
        } else {
-            std.debug.print("mongo-lite: unknown option '{s}'\n{s}", .{ arg, usage });
+            std.debug.print("multiforadb: unknown option '{s}'\n{s}", .{ arg, usage });
            return error.UnknownOption;
        }
    }
@@ -99,7 +99,7 @@ pub fn main(init: std.process.Init) !void {
    var engine = try mongo.db.Engine.open(init.gpa, init.io, db_path);
    defer engine.deinit();
    engine.compact_threshold = compact_threshold;
-    std.debug.print("mongo-lite: opened database '{s}' (compact threshold {d})\n", .{ db_path, compact_threshold });
+    std.debug.print("multiforadb: opened database '{s}' (compact threshold {d})\n", .{ db_path, compact_threshold });

    var server = mongo.server.Server{
        .gpa = init.gpa,
--- a/src/server.zig
+++ b/src/server.zig
@@ -35,7 +35,7 @@ pub const Server = struct {
        var listener = try addr.listen(io, .{ .reuse_address = true });
        defer listener.deinit(io);

-        std.debug.print("mongo-lite: listening on {s}:{d}\n", .{ self.bind_ip, self.port });
+        std.debug.print("multiforadb: listening on {s}:{d}\n", .{ self.bind_ip, self.port });

        var group: std.Io.Group = .init;
        defer group.cancel(io);
@@ -48,7 +48,7 @@ pub const Server = struct {
            const stream = listener.accept(io) catch |err| switch (err) {
                error.Canceled => return,
                else => {
-                    std.debug.print("mongo-lite: accept error: {s}\n", .{@errorName(err)});
+                    std.debug.print("multiforadb: accept error: {s}\n", .{@errorName(err)});
                    continue;
                },
            };
@@ -70,12 +70,12 @@ fn ttl_monitor(io: std.Io, server: *Server) error{Canceled}!void {
        try std.Io.sleep(io, interval, .awake);
        const now_ms = std.Io.Timestamp.now(io, .real).toMilliseconds();
        _ = server.engine.ttl_sweep(now_ms) catch |err| {
-            std.debug.print("mongo-lite: TTL sweep failed: {s}\n", .{@errorName(err)});
+            std.debug.print("multiforadb: TTL sweep failed: {s}\n", .{@errorName(err)});
            continue;
        };
        if (server.engine.take_compact()) {
            server.engine.compact() catch |err| {
-                std.debug.print("mongo-lite: compaction failed: {s}\n", .{@errorName(err)});
+                std.debug.print("multiforadb: compaction failed: {s}\n", .{@errorName(err)});
            };
        }
    }
@@ -120,7 +120,7 @@ fn handle_connection_inner(io: std.Io, stream: std.Io.net.Stream, server: *Serve
        reader.interface.readSliceAll(&len_bytes) catch return; // clean client disconnect (EOF or RST)
        const total: u32 = std.mem.readInt(u32, &len_bytes, .little);
        if (total < 16 or total > wire.max_message_size) {
-            std.debug.print("mongo-lite: bad message length {d} on conn {d}\n", .{ total, connection_id });
+            std.debug.print("multiforadb: bad message length {d} on conn {d}\n", .{ total, connection_id });
            return;
        }

@@ -129,14 +129,14 @@ fn handle_connection_inner(io: std.Io, stream: std.Io.net.Stream, server: *Serve
        msg_buf.items.len = total;
        std.mem.writeInt(u32, msg_buf.items[0..4], total, .little);
        reader.interface.readSliceAll(msg_buf.items[4..]) catch |err| {
-            std.debug.print("mongo-lite: read error on conn {d}: {s} (body, len {d})\n", .{ connection_id, @errorName(err), total });
+            std.debug.print("multiforadb: read error on conn {d}: {s} (body, len {d})\n", .{ connection_id, @errorName(err), total });
            return;
        };

        var msg = wire.Message.parse(server.gpa, msg_buf.items) catch |err| {
            // Unparseable request: close the connection.
            const op: i32 = if (msg_buf.items.len >= 16) std.mem.readInt(i32, msg_buf.items[12..16], .little) else 0;
-            std.debug.print("mongo-lite: bad message on conn {d}: {s} (opCode {d})\n", .{ connection_id, @errorName(err), op });
+            std.debug.print("multiforadb: bad message on conn {d}: {s} (opCode {d})\n", .{ connection_id, @errorName(err), op });
            return;
        };
        defer msg.deinit();
@@ -146,7 +146,7 @@ fn handle_connection_inner(io: std.Io, stream: std.Io.net.Stream, server: *Serve
        commands.dispatch(&ctx, &msg, &reply) catch |err| {
            // Discard any partial reply (the client would read the first
            // ok field, which may already say 1) and send a clean error.
-            std.debug.print("mongo-lite: dispatch error on conn {d} cmd {s}: {s}\n", .{ connection_id, msg.command_name(), @errorName(err) });
+            std.debug.print("multiforadb: dispatch error on conn {d} cmd {s}: {s}\n", .{ connection_id, msg.command_name(), @errorName(err) });
            reply.pairs.clearRetainingCapacity();
            reply.put_error(
                @intFromEnum(commands.ErrorCode.internal_error),
@@ -161,16 +161,16 @@ fn handle_connection_inner(io: std.Io, stream: std.Io.net.Stream, server: *Serve
        else
            reply.build(server.gpa, reply_request_id, msg.request_id, &out_buf);
        built catch |err| {
-            std.debug.print("mongo-lite: reply build error on conn {d}: {s}\n", .{ connection_id, @errorName(err) });
+            std.debug.print("multiforadb: reply build error on conn {d}: {s}\n", .{ connection_id, @errorName(err) });
            return;
        };
        reply_request_id +%= 1;
        writer.interface.writeAll(out_buf.items) catch |err| {
-            std.debug.print("mongo-lite: write error on conn {d}: {s}\n", .{ connection_id, @errorName(err) });
+            std.debug.print("multiforadb: write error on conn {d}: {s}\n", .{ connection_id, @errorName(err) });
            return;
        };
        writer.interface.flush() catch |err| {
-            std.debug.print("mongo-lite: flush error on conn {d}: {s}\n", .{ connection_id, @errorName(err) });
+            std.debug.print("multiforadb: flush error on conn {d}: {s}\n", .{ connection_id, @errorName(err) });
            return;
        };
    }
--- a/src/storage.zig
+++ b/src/storage.zig
@@ -227,14 +227,14 @@ pub const Log = struct {
        while (true) {
            var hdr: [block_header_len]u8 = undefined;
            const n = self.file.readPositionalAll(self.io, &hdr, pos) catch |err| {
-                std.debug.print("mongo-lite: log read error at {d}: {s}\n", .{ pos, @errorName(err) });
+                std.debug.print("multiforadb: log read error at {d}: {s}\n", .{ pos, @errorName(err) });
                return error.InvalidLog;
            };
            if (n == 0) return; // clean end
            if (n < block_header_len) return; // torn tail: partial block header
            const total: u32 = std.mem.readInt(u32, hdr[0..4], .little);
            if (total < block_header_len or total - block_header_len > max_block_payload) {
-                std.debug.print("mongo-lite: corrupt block length {d} at {d}\n", .{ total, pos });
+                std.debug.print("multiforadb: corrupt block length {d} at {d}\n", .{ total, pos });
                return; // torn tail: impossible length, nothing to validate
            }
            const payload_len: usize = total - block_header_len;
@@ -262,7 +262,7 @@ pub const Log = struct {
                codec_raw => try decomp.appendSlice(self.gpa, payload),
                codec_lz4 => try lz4_decompress(self.gpa, payload, &decomp),
                else => {
-                    std.debug.print("mongo-lite: unknown block codec {d} at {d}\n", .{ codec, pos });
+                    std.debug.print("multiforadb: unknown block codec {d} at {d}\n", .{ codec, pos });
                    return error.InvalidLog;
                },
            }
@@ -284,12 +284,12 @@ pub const Log = struct {
        if (bytes.len < 4) return error.InvalidLog;
        const total: u32 = std.mem.readInt(u32, bytes[0..4], .little);
        if (total < header_len) {
-            std.debug.print("mongo-lite: corrupt record length {d} at {d}\n", .{ total, pos });
+            std.debug.print("multiforadb: corrupt record length {d} at {d}\n", .{ total, pos });
            return error.InvalidLog;
        }
        const payload_len: usize = total - 4;
        if (payload_len > max_record_payload) {
-            std.debug.print("mongo-lite: record too large at {d}\n", .{pos});
+            std.debug.print("multiforadb: record too large at {d}\n", .{pos});
            return error.InvalidLog;
        }
        if (bytes.len < total) return error.InvalidLog; // record crosses the block end
@@ -309,7 +309,7 @@ pub const Log = struct {
        const doc = try self.gpa.create(bson.Document);
        doc.* = bson.Document.parse(self.gpa, doc_bytes) catch {
            self.gpa.destroy(doc);
-            std.debug.print("mongo-lite: unparseable doc in log at {d}\n", .{pos});
+            std.debug.print("multiforadb: unparseable doc in log at {d}\n", .{pos});
            return error.InvalidLog;
        };
        try callback(ctx, .{
--- a/tests/e2e/README.md
+++ b/tests/e2e/README.md
@@ -1,6 +1,6 @@
 # End-to-end tests with the official MongoDB Node.js driver

-These exercise mongo-lite from a real driver over TCP: full CRUD, query
+These exercise MultiforaDB from a real driver over TCP: full CRUD, query
 operators, aggregation, error codes, concurrent clients, crash recovery, and
 the whole lifecycle including server restarts.

@@ -18,7 +18,7 @@ Most suites expect a server running on port 27020:

 ```sh
 zig build
-zig-out/bin/mongo-lite --port 27020 --db /tmp/ml-e2e.log --ttl-sweep-secs 1 &
+zig-out/bin/multiforadb --port 27020 --db /tmp/mfdb-e2e.log --ttl-sweep-secs 1 &

 node tests/e2e/e2e.js          # CRUD + operators + aggregate + errors (29 checks)
 node tests/e2e/e2e2.js concurrent   # 8 clients: 4 writers + 4 readers (2 checks)
@@ -43,7 +43,7 @@ E2E6_PORT=27300 node tests/e2e/e2e6.js   # different port if 27220 is taken

 Rebuild with `zig build` after any change under `src/` before restarting the
 server: `zig build test` compiles the test binary only and leaves
-`zig-out/bin/mongo-lite` stale, so the suites keep running against the old
+`zig-out/bin/multiforadb` stale, so the suites keep running against the old
 rules and report failures that the source no longer explains.

 `e2e2.js concurrent` is safe to repeat against a running server (it drops its
@@ -92,9 +92,9 @@ Measured behavior (all documented in the top-level README):
 bash tests/e2e/compare-run.sh [size] [doc-size]   # e.g. 1g 16k
 ```

-Starts mongod (`brew install mongodb-community`) on :27018 and mongo-lite
+Starts mongod (`brew install mongodb-community`) on :27018 and MultiforaDB
 on :27019, runs the same driver workload against each (durable writes:
-mongo-lite fsyncs per command, mongod runs with `j: true`), measures kill -9
+MultiforaDB fsyncs per command, mongod runs with `j: true`), measures kill -9
 reopen for both, and prints a side-by-side table. `compare.js` alone runs
 one side (see its `--help`-style header comment).

@@ -109,7 +109,7 @@ comparison (`concurrent.js`, N clients each doing sequential `insertOne`
 with `{w:1, j:true}` — the group-commit path under real contention), then
 writes a machine-readable, versioned report to
 `tests/e2e/results/bench-<timestamp>.txt` and prints a diff of the
-mongo-lite numbers against the previous run (`results/bench-latest.txt`).
+MultiforaDB numbers against the previous run (`results/bench-latest.txt`).
 The report has `[main]` / `[concurrency]` / `[meta]` sections with
 `name<TAB>value` rows; `bench-run.sh 1g 16k` reproduces the phase8 gate
 (see `results/phase8.txt`).
--- a/tests/e2e/bench-run.sh
+++ b/tests/e2e/bench-run.sh
@@ -4,10 +4,10 @@
 #   bash tests/e2e/bench-run.sh [size] [doc-size] [clients...]
 #   (defaults: 1g, 16k, "1 4 8 16 32"; clients apply to the concurrent phase)
 #
-# Runs the compare-run.sh main suite (mongo-lite vs mongod, same driver,
+# Runs the compare-run.sh main suite (multiforadb vs mongod, same driver,
 # durable writes) plus the concurrent durable-write comparison, then writes
 # a versioned machine-readable report to tests/e2e/results/ and prints a
-# diff of the mongo-lite numbers against the previous run.
+# diff of the multiforadb numbers against the previous run.
 set -u
 cd "$(dirname "$0")/../.."
 SIZE="${1:-1g}"; DOC="${2:-16k}"; CLIENTS="${3:-1 4 8 16 32}"
@@ -35,8 +35,8 @@ echo "### concurrent durable insertOne (clients: $CLIENTS)" >&2
 rm -rf "$TMP/mongod" && mkdir -p "$TMP/mongod"
 mongod --dbpath "$TMP/mongod" --port 27018 --bind_ip 127.0.0.1 --quiet >"$TMP/md.out" 2>&1 &
 MD_PID=$!
-./zig-out/bin/mongo-lite --port 27019 --db "$TMP/ml.log" --compact-threshold 1g >"$TMP/ml.out" 2>&1 &
-ML_PID=$!
+./zig-out/bin/multiforadb --port 27019 --db "$TMP/mfdb.log" --compact-threshold 1g >"$TMP/mfdb.out" 2>&1 &
+MFDB_PID=$!
 # Poll both servers with the real driver until they answer (fresh mongod
 # dbpaths can take several seconds; a fixed sleep is flaky).
 wait_ready() { # $1 = url
@@ -47,25 +47,25 @@ wait_ready() { # $1 = url
  done
  return 1
 }
-wait_ready mongodb://127.0.0.1:27018 || { echo "mongod never became ready" >&2; kill -9 $MD_PID $ML_PID 2>/dev/null; exit 1; }
-wait_ready mongodb://127.0.0.1:27019 || { echo "mongo-lite never became ready" >&2; kill -9 $MD_PID $ML_PID 2>/dev/null; exit 1; }
+wait_ready mongodb://127.0.0.1:27018 || { echo "mongod never became ready" >&2; kill -9 $MD_PID $MFDB_PID 2>/dev/null; exit 1; }
+wait_ready mongodb://127.0.0.1:27019 || { echo "multiforadb never became ready" >&2; kill -9 $MD_PID $MFDB_PID 2>/dev/null; exit 1; }
 CC="$TMP/cc.txt"
 for C in $CLIENTS; do
  MD=$(node tests/e2e/concurrent.js --url mongodb://127.0.0.1:27018 --label mongodb --clients "$C" --per-client "$PER_CLIENT" 2>/dev/null | tail -1)
-  ML=$(node tests/e2e/concurrent.js --url mongodb://127.0.0.1:27019 --label mongo-lite --clients "$C" --per-client "$PER_CLIENT" 2>/dev/null | tail -1)
-  ML_D=$(echo "$ML" | sed -E 's/.*\t([0-9.]+) docs\/s.*/\1/')
+  MFDB=$(node tests/e2e/concurrent.js --url mongodb://127.0.0.1:27019 --label multiforadb --clients "$C" --per-client "$PER_CLIENT" 2>/dev/null | tail -1)
+  MFDB_D=$(echo "$MFDB" | sed -E 's/.*\t([0-9.]+) docs\/s.*/\1/')
  MD_D=$(echo "$MD" | sed -E 's/.*\t([0-9.]+) docs\/s.*/\1/')
-  if [ -z "$ML_D" ] || [ -z "$MD_D" ]; then
-    echo "WARNING: concurrent run at $C clients produced no result (ml='$ML' md='$MD')" >&2
+  if [ -z "$MFDB_D" ] || [ -z "$MD_D" ]; then
+    echo "WARNING: concurrent run at $C clients produced no result (mfdb='$MFDB' md='$MD')" >&2
  fi
-  RATIO=$(node -e "const m=Number('$ML_D'),d=Number('$MD_D');console.log(d>0?(m/d).toFixed(1)+'x':'—')")
-  echo "clients	$C	$ML_D	$MD_D	$RATIO" | tee -a "$CC"
+  RATIO=$(node -e "const m=Number('$MFDB_D'),d=Number('$MD_D');console.log(d>0?(m/d).toFixed(1)+'x':'—')")
+  echo "clients	$C	$MFDB_D	$MD_D	$RATIO" | tee -a "$CC"
 done
-kill -9 $MD_PID $ML_PID 2>/dev/null; wait 2>/dev/null
+kill -9 $MD_PID $MFDB_PID 2>/dev/null; wait 2>/dev/null

 # ---- assemble the report --------------------------------------------------
 {
-  echo "# mongo-lite vs MongoDB benchmark"
+  echo "# multiforadb vs MongoDB benchmark"
  echo "# date: $(date -u +%Y-%m-%dT%H:%M:%SZ)  git: $REV$DIRTY"
  echo "# args: size=$SIZE doc-size=$DOC wc=j clients=$CLIENTS per-client=$PER_CLIENT"
  echo "# reproduce: bash tests/e2e/bench-run.sh $SIZE $DOC \"$CLIENTS\""
@@ -81,7 +81,7 @@ kill -9 $MD_PID $ML_PID 2>/dev/null; wait 2>/dev/null
      }
      return m;
    };
-    const a = read("/tmp/mongo-cmp/ml-report.txt");
+    const a = read("/tmp/mongo-cmp/mfdb-report.txt");
    const b = read("/tmp/mongo-cmp/mongo-report.txt");
    const keys = ["insertOne (sequential) ×200","bulk insert throughput","docs loaded","createIndex({k: 1})",
      "countDocuments({})","findOne({_id: <ObjectId>})","findOne({k: 500}) (indexed)","find({p: {$gte,$lt}}).count() (scan)",
@@ -104,7 +104,7 @@ kill -9 $MD_PID $ML_PID 2>/dev/null; wait 2>/dev/null
 # ---- diff against the previous run ---------------------------------------
 echo "report: $REPORT"
 if [ -f "$LATEST" ]; then
-  echo; echo "### mongo-lite numbers vs previous run ($(head -2 "$LATEST" | tail -1 | sed 's/# //'))"
+  echo; echo "### multiforadb numbers vs previous run ($(head -2 "$LATEST" | tail -1 | sed 's/# //'))"
  node -e '
    const fs = require("fs");
    const old = fs.readFileSync(process.argv[1], "utf8");
@@ -136,9 +136,9 @@ if [ -f "$LATEST" ]; then
      const d = isFinite(num(ov)) && isFinite(num(v)) && num(ov) > 0 ? ((num(v) - num(ov)) / num(ov) * 100).toFixed(0) + "%" : "";
      console.log(k.padEnd(42) + fmt(ov) + fmt(v) + d);
    }
-    // concurrency (mongo-lite docs/s per client count)
+    // concurrency (multiforadb docs/s per client count)
    const oc = section(old, "concurrency"), nc = section(neu, "concurrency");
-    console.log("\nconcurrency — mongo-lite docs/s:");
+    console.log("\nconcurrency — multiforadb docs/s:");
    for (const [k, v] of nc) {
      const ov = oc.get(k);
      const d = ov && Number(ov) > 0 ? ((Number(v) - Number(ov)) / Number(ov) * 100).toFixed(0) + "%" : "";
--- a/tests/e2e/big.js
+++ b/tests/e2e/big.js
@@ -1,4 +1,4 @@
-// Big-collection harness: how mongo-lite behaves with multi-GB collections.
+// Big-collection harness: how multiforadb behaves with multi-GB collections.
 //
 // Spawns its own server, bulk-inserts up to ~5 GB of documents, measures
 // insert throughput, log/compaction behavior and server RSS, benchmarks
@@ -22,14 +22,14 @@
 //     --keep          keep the db file after the run
 //     --quick         tiny run (256m, 16k docs)
 //
-// Env: ML_BIN  server binary (default ../../zig-out/bin/mongo-lite)
+// Env: MFDB_BIN  server binary (default ../../zig-out/bin/multiforadb)
 //      BIG_DB  db file path (default .zig-cache/big.log)
 const { MongoClient } = require('mongodb');
 const { spawn } = require('child_process');
 const fs = require('fs');
 const path = require('path');

-const BIN = process.env.ML_BIN || path.resolve(__dirname, '../../zig-out/bin/mongo-lite');
+const BIN = process.env.MFDB_BIN || path.resolve(__dirname, '../../zig-out/bin/multiforadb');
 const PORT = Number(process.env.BIG_PORT || 27221);
 const DBFILE = process.env.BIG_DB || path.resolve(__dirname, '../../.zig-cache/big.log');
 const URL = `mongodb://127.0.0.1:${PORT}`;
@@ -137,7 +137,7 @@ async function main() {
  }
  fs.rmSync(DBFILE, { force: true });
  const fmt = (n) => (n >= 1e9 ? (n / 1e9).toFixed(2) + ' GB' : n >= 1e6 ? (n / 1e6).toFixed(1) + ' MB' : n >= 1e3 ? (n / 1e3).toFixed(1) + ' KB' : n + ' B');
-  console.log(`mongo-lite big-collection harness`);
+  console.log(`multiforadb big-collection harness`);
  console.log(`  size ${fmt(SIZE)} · doc ~${fmt(DOC_SIZE)} · batch ${opt.batch} · index ${opt.index || 'none'} · ids ${opt.oid ? 'ObjectId' : 'int'} · compact-threshold ${opt.compactThreshold || '16m'} · db ${DBFILE}`);

  console.log('\n== server start (fresh log) ==');
@@ -331,7 +331,7 @@ async function main() {
  await stopServer('SIGKILL');

  console.log('\n== summary ==');
-  console.log(`  mongo-lite handles a ${fmt(bytes)} collection fully in RAM (RSS ${peakRss} MB)`);
+  console.log(`  multiforadb handles a ${fmt(bytes)} collection fully in RAM (RSS ${peakRss} MB)`);
  console.log(`  insert: ${(bytes / 1e6 / (insertMs / 1000)).toFixed(1)} MB/s — fsync per write is by design (crash safety)`);
  if (compactions > 0) {
    console.log(`  ${compactions} compaction rewrites observed: every 16MB of writes rewrites the whole log — for multi-GB loads the cumulative rewrite traffic dominates`);
--- a/tests/e2e/compare-run.sh
+++ b/tests/e2e/compare-run.sh
@@ -1,26 +1,26 @@
 #!/bin/bash
-# Compare mongo-lite against a real MongoDB with the same workload, same driver.
+# Compare multiforadb against a real MongoDB with the same workload, same driver.
 #
 #   bash tests/e2e/compare-run.sh [size] [doc-size]
 #   (defaults: 1g, 16k)
 #
-# Starts mongod on :27018 and mongo-lite on :27019, runs compare.js against
-# each (durable writes: mongo-lite fsyncs per doc, mongod ack'd with j:true),
+# Starts mongod on :27018 and multiforadb on :27019, runs compare.js against
+# each (durable writes: multiforadb fsyncs per doc, mongod ack'd with j:true),
 # measures kill -9 reopen time for both, and prints a side-by-side table.
 set -u
 cd "$(dirname "$0")/../.."
 SIZE="${1:-1g}"
 DOC="${2:-16k}"
-echo "comparing mongo-lite vs mongodb — dataset ${SIZE}, docs ~${DOC}"
+echo "comparing multiforadb vs mongodb — dataset ${SIZE}, docs ~${DOC}"

 CMPDIR=/tmp/mongo-cmp
 mkdir -p "$CMPDIR/mongod"
-ML_LOG="$CMPDIR/ml.log"
-ML_OUT="$CMPDIR/ml-srv.out"
+MFDB_LOG="$CMPDIR/mfdb.log"
+MFDB_OUT="$CMPDIR/mfdb-srv.out"
 MD_OUT="$CMPDIR/md-srv.out"
-ML_PORT=27019
+MFDB_PORT=27019
 MD_PORT=27018
-rm -f "$ML_LOG"
+rm -f "$MFDB_LOG"
 rm -rf "$CMPDIR/mongod" && mkdir -p "$CMPDIR/mongod"

 # ---- MongoDB -------------------------------------------------------------
@@ -60,26 +60,26 @@ setTimeout(poll, 300);
 ')
 kill -9 $MD_PID 2>/dev/null

-# ---- mongo-lite ----------------------------------------------------------
-echo; echo "### mongo-lite (recommended config: --compact-threshold 1g)"
+# ---- multiforadb ----------------------------------------------------------
+echo; echo "### multiforadb (recommended config: --compact-threshold 1g)"
 # Debug is ~10-200x slower (see the README's perf section) — the comparison
 # must use the optimized build.
 zig build -Doptimize=ReleaseFast 2>&1 | grep -c "^error" | grep -q "^0" || { echo "build failed"; exit 1; }
-./zig-out/bin/mongo-lite --port $ML_PORT --db "$ML_LOG" --compact-threshold 1g >"$ML_OUT" 2>&1 &
-ML_PID=$!
-wait_ready "mongodb://127.0.0.1:$ML_PORT" || { echo "mongo-lite never became ready" >&2; exit 1; }
-node tests/e2e/compare.js --url "mongodb://127.0.0.1:$ML_PORT" --label mongo-lite --size "$SIZE" --doc-size "$DOC" \
-  > "$CMPDIR/ml-report.txt" 2>&1 || { echo "mongo-lite bench failed:"; tail -5 "$CMPDIR/ml-report.txt"; }
-ML_RSS=$(ps -o rss= -p $ML_PID | awk '{printf "%.0f", $1/1024}')
-ML_DISK=$(du -sm "$ML_LOG" | awk '{print $1}')
+./zig-out/bin/multiforadb --port $MFDB_PORT --db "$MFDB_LOG" --compact-threshold 1g >"$MFDB_OUT" 2>&1 &
+MFDB_PID=$!
+wait_ready "mongodb://127.0.0.1:$MFDB_PORT" || { echo "multiforadb never became ready" >&2; exit 1; }
+node tests/e2e/compare.js --url "mongodb://127.0.0.1:$MFDB_PORT" --label multiforadb --size "$SIZE" --doc-size "$DOC" \
+  > "$CMPDIR/mfdb-report.txt" 2>&1 || { echo "multiforadb bench failed:"; tail -5 "$CMPDIR/mfdb-report.txt"; }
+MFDB_RSS=$(ps -o rss= -p $MFDB_PID | awk '{printf "%.0f", $1/1024}')
+MFDB_DISK=$(du -sm "$MFDB_LOG" | awk '{print $1}')

-echo; echo "### mongo-lite kill -9 + reopen (replay)"
-kill -9 $ML_PID; wait $ML_PID 2>/dev/null
-ML_REOPEN=$(cd tests/e2e && node -e '
+echo; echo "### multiforadb kill -9 + reopen (replay)"
+kill -9 $MFDB_PID; wait $MFDB_PID 2>/dev/null
+MFDB_REOPEN=$(cd tests/e2e && node -e '
 const { spawn } = require("child_process");
 const { MongoClient } = require("mongodb");
 const t0 = Date.now();
-const p = spawn("/Users/shkmv/workspace/sandbox/mongo-lite/zig-out/bin/mongo-lite", ["--port","27019","--db","/tmp/mongo-cmp/ml.log","--compact-threshold","1g"], {stdio:"ignore"});
+const p = spawn("../../zig-out/bin/multiforadb", ["--port","27019","--db","/tmp/mongo-cmp/mfdb.log","--compact-threshold","1g"], {stdio:"ignore"});
 const poll = async () => {
  const c = new MongoClient("mongodb://127.0.0.1:27019", {serverSelectionTimeoutMS: 800});
  try { await c.connect(); await c.db("admin").command({ping:1}); await c.close(); p.kill("SIGKILL"); console.log(((Date.now()-t0)/1000).toFixed(1)); }
@@ -87,12 +87,12 @@ const poll = async () => {
 };
 setTimeout(poll, 300);
 ')
-kill -9 $ML_PID 2>/dev/null
+kill -9 $MFDB_PID 2>/dev/null

 # ---- side by side ----------------------------------------------------------
 echo; echo "### side by side — ${SIZE} dataset, ~${DOC} docs"
 cat > "$CMPDIR/meta.json" <<EOF
-{"ml_rss_mb": "$ML_RSS", "md_rss_mb": "$MD_RSS", "ml_reopen": "${ML_REOPEN}s", "md_reopen": "${MD_REOPEN}s", "ml_disk_mb": "${ML_DISK}MB", "md_disk_mb": "${MD_DISK}MB"}
+{"mfdb_rss_mb": "$MFDB_RSS", "md_rss_mb": "$MD_RSS", "mfdb_reopen": "${MFDB_REOPEN}s", "md_reopen": "${MD_REOPEN}s", "mfdb_disk_mb": "${MFDB_DISK}MB", "md_disk_mb": "${MD_DISK}MB"}
 EOF
 node -e '
 const fs = require("fs");
@@ -105,7 +105,7 @@ const read = (p) => {
  }
  return m;
 };
-const a = read("/tmp/mongo-cmp/ml-report.txt");
+const a = read("/tmp/mongo-cmp/mfdb-report.txt");
 const b = read("/tmp/mongo-cmp/mongo-report.txt");
 const meta = JSON.parse(fs.readFileSync("/tmp/mongo-cmp/meta.json", "utf8"));
 const keys = ["insertOne (sequential) ×200","bulk insert throughput","docs loaded","createIndex({k: 1})",
@@ -113,17 +113,17 @@ const keys = ["insertOne (sequential) ×200","bulk insert throughput","docs load
  "find({}).sort({_id:-1}).limit(20)","find({}, {proj}).limit(1000)","aggregate $group by k",
  "updateOne({_id}) ×50","updateMany({k: 7}, {$inc})","deleteOne({_id}) + insertOne","node client RSS"];
 const col = (v) => String(v).padEnd(22);
-console.log(`${"benchmark".padEnd(42)}  ${col("mongo-lite")}  ${col("mongodb")}  ratio`);
+console.log(`${"benchmark".padEnd(42)}  ${col("multiforadb")}  ${col("mongodb")}  ratio`);
 for (const k of keys) {
  const av = a[k] || "—", bv = b[k] || "—";
  const ar = parseFloat(av), br = parseFloat(bv);
  const ratio = isFinite(ar) && isFinite(br) && ar > 0 && br > 0 ? (ar / br).toFixed(1) + "x" : "";
  console.log(`${k.padEnd(42)}  ${col(av)}  ${col(bv)}  ${ratio}`);
 }
-console.log(`${`server RSS`.padEnd(42)}  ${col(meta.ml_rss_mb + " MB")}  ${col(meta.md_rss_mb + " MB")}`);
-console.log(`${`kill -9 reopen`.padEnd(42)}  ${col(meta.ml_reopen)}  ${col(meta.md_reopen)}`);
-console.log(`${`db on disk`.padEnd(42)}  ${col(meta.ml_disk_mb)}  ${col(meta.md_disk_mb)}`);
+console.log(`${`server RSS`.padEnd(42)}  ${col(meta.mfdb_rss_mb + " MB")}  ${col(meta.md_rss_mb + " MB")}`);
+console.log(`${`kill -9 reopen`.padEnd(42)}  ${col(meta.mfdb_reopen)}  ${col(meta.md_reopen)}`);
+console.log(`${`db on disk`.padEnd(42)}  ${col(meta.mfdb_disk_mb)}  ${col(meta.md_disk_mb)}`);
 '

-pkill -9 -f "mongo-lite --port $ML_PORT" 2>/dev/null
-echo; echo "done — reports: $CMPDIR/ml-report.txt, $CMPDIR/mongo-report.txt"
+pkill -9 -f "multiforadb --port $MFDB_PORT" 2>/dev/null
+echo; echo "done — reports: $CMPDIR/mfdb-report.txt, $CMPDIR/mongo-report.txt"
--- a/tests/e2e/compare.js
+++ b/tests/e2e/compare.js
@@ -1,8 +1,8 @@
-// Benchmark: the same workload through the official driver against mongo-lite
+// Benchmark: the same workload through the official driver against multiforadb
 // and a real MongoDB. Run once per server URL, then diff the reports.
 //
 //   node tests/e2e/compare.js --url mongodb://127.0.0.1:27018 --label mongodb
-//   node tests/e2e/compare.js --url mongodb://127.0.0.1:27019 --label mongo-lite
+//   node tests/e2e/compare.js --url mongodb://127.0.0.1:27019 --label multiforadb
 //
 // Options:
 //   --url <u>        server URL (required)
@@ -12,11 +12,11 @@
 //   --batch <n>      docs per insertMany (default 500)
 //   --index <field>  field to index before the op benchmarks (default k)
 //   --wc <j|none>    write concern: 'j' = {w:1, j:true} durable ack on every
-//                    write (fair vs mongo-lite's fsync-per-write); 'none' =
+//                    write (fair vs multiforadb's fsync-per-write); 'none' =
 //                    driver default (default j)
 //
 // Every benchmark is awaited (no fire-and-forget), which is exactly how the
-// big.js harness measures mongo-lite, so the numbers are directly comparable.
+// big.js harness measures multiforadb, so the numbers are directly comparable.
 const { MongoClient, ObjectId } = require('mongodb');
 const fs = require('fs');
 const os = require('os');
@@ -118,7 +118,7 @@ async function main() {
  try { collInfo = await db.command({ collStats: 'items' }); } catch {}
  if (collInfo) row('server-side data size', fmt(collInfo.size ?? 0), `storage ${fmt(collInfo.storageSize ?? 0)}`);

-  // ---- secondary index (mongo-lite: planner uses it; mongodb: normal) ------
+  // ---- secondary index (multiforadb: planner uses it; mongodb: normal) ------
  if (opt.index) {
    await bench(`createIndex({${opt.index}: 1})`, async () => { await coll.createIndex({ [opt.index]: 1 }); });
  }
--- a/tests/e2e/concurrent.js
+++ b/tests/e2e/concurrent.js
@@ -2,7 +2,7 @@
 // insertOne ({w:1, j:true} by default) into their own collection, reporting
 // aggregate docs/s. Exercises the group-commit path under real contention.
 //
-//   node tests/e2e/concurrent.js --url mongodb://127.0.0.1:27019 --label mongo-lite
+//   node tests/e2e/concurrent.js --url mongodb://127.0.0.1:27019 --label multiforadb
 //                                 [--clients 8] [--per-client 2000] [--wc j|none]
 //
 // Output (stdout, tab-separated, one line):
--- a/tests/e2e/e2e.js
+++ b/tests/e2e/e2e.js
@@ -1,4 +1,4 @@
-// End-to-end test: official MongoDB Node.js driver against mongo-lite.
+// End-to-end test: official MongoDB Node.js driver against multiforadb.
 const { MongoClient, ObjectId } = require('mongodb');

 const URL = 'mongodb://127.0.0.1:27020';
--- a/tests/e2e/e2e4.js
+++ b/tests/e2e/e2e4.js
@@ -4,7 +4,7 @@
 // server must reject with CannotCreateIndex (67).
 //
 // The server must run with a short sweep interval, e.g.
-//   zig-out/bin/mongo-lite --port 27020 --db /tmp/ml-e2e.log --ttl-sweep-secs 1
+//   zig-out/bin/multiforadb --port 27020 --db /tmp/mfdb-e2e.log --ttl-sweep-secs 1
 const { MongoClient } = require('mongodb');

 const URL = 'mongodb://127.0.0.1:27020';
--- a/tests/e2e/e2e6.js
+++ b/tests/e2e/e2e6.js
@@ -1,6 +1,6 @@
 // E2E part 6: the full lifecycle, self-contained.
 //
-// Spawns its own mongo-lite server on a fresh log file and drives the whole
+// Spawns its own multiforadb server on a fresh log file and drives the whole
 // feature surface through the official driver: CRUD + query operators +
 // aggregation + error codes + secondary indexes + TTL expiry + admin
 // commands, then restarts the server twice — once gracefully, once with
@@ -12,7 +12,7 @@
 //   node tests/e2e/e2e6.js
 //
 // Env:  E2E6_PORT  listen port (default 27220)
-//       ML_BIN     server binary (default ../../zig-out/bin/mongo-lite)
+//       MFDB_BIN     server binary (default ../../zig-out/bin/multiforadb)
 //       E2E6_KEEP  keep the log file after the run
 const { MongoClient, ObjectId } = require('mongodb');
 const { spawn } = require('child_process');
@@ -20,7 +20,7 @@ const fs = require('fs');
 const path = require('path');

 const PORT = Number(process.env.E2E6_PORT || 27220);
-const BIN = process.env.ML_BIN || path.resolve(__dirname, '../../zig-out/bin/mongo-lite');
+const BIN = process.env.MFDB_BIN || path.resolve(__dirname, '../../zig-out/bin/multiforadb');
 const DBFILE = process.env.E2E6_DB || path.resolve(__dirname, '../../.zig-cache/e2e6-full.log');
 const URL = `mongodb://127.0.0.1:${PORT}`;

--- a/tests/e2e/package.json
+++ b/tests/e2e/package.json
@@ -1,7 +1,7 @@
 {
  "name": "e2e",
  "version": "1.0.0",
-  "description": "These exercise mongo-lite from a real driver over TCP: full CRUD, query operators, aggregation, error codes, concurrent clients, and crash recovery.",
+  "description": "These exercise multiforadb from a real driver over TCP: full CRUD, query operators, aggregation, error codes, concurrent clients, and crash recovery.",
  "main": "e2e.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"