https://nalar.dev/tags/request-coalescing/ Recent content in Request Coalescing on Nalar Hugo en-us Wed, 16 Sep 2026 00:00:00 +0700 https://nalar.dev/go-singleflight-shares-only-in-flight-results/ Wed, 16 Sep 2026 00:00:00 +0700 https://nalar.dev/go-singleflight-shares-only-in-flight-results/ <p><code>singleflight.Group</code> suppresses duplicate function executions only while an operation for the same key is in flight. Concurrent callers can receive one shared result, but a caller arriving after completion starts a new execution. The group is therefore a request-coalescing mechanism, not a result cache.</p> <p>This boundary affects cache fills, metadata refreshes, backend reads, and other keyed operations that can attract bursts of identical concurrent work. A group can reduce simultaneous pressure on the backing operation without extending the lifetime of its returned value.</p>