Aleksey Shakhmatov
8d322123a4
Implements balancer middleware with URL rewriting per-request: - RoundRobin, Failover, and WeightedRandom endpoint selection strategies - Background HealthChecker with configurable probe interval and path - Thread-safe health state tracking with sync.RWMutex
18 lines
427 B
Go
18 lines
427 B
Go
package balancer
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type failover struct{}
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// Failover returns a strategy that always picks the first healthy endpoint.
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// If the primary endpoint is unhealthy, it falls back to the next available
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// healthy endpoint in order.
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func Failover() Strategy {
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return &failover{}
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}
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func (f *failover) Next(healthy []Endpoint) (Endpoint, error) {
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if len(healthy) == 0 {
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return Endpoint{}, ErrNoHealthy
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}
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return healthy[0], nil
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}
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