lukaszraczylo/graphql-monitoring-proxy
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fix(ratelimit): bound memory and CPU per request

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The sustained gate stored one entry for every attempt, denied ones too, and summed all entries on each request. A flood grew memory with rate times interval and made each request slower. Both gates now keep only the newest limit plus one attempt times. A Lean proof shows this decides the same as the full count. One check dropped from 29,502 ns and 11 allocations to 43 ns and none. The go-ratecounter dependency is gone.
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lukaszraczylo
2026-11-03 00:55:35 +00:00
parent cff11f2b25
commit 3a6403c30b
7 changed files with 164 additions and 121 deletions
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go.mod
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@@ -20,7 +20,6 @@ require (
github.com/graphql-go/graphql v0.8.1
github.com/jackc/pgx/v5 v5.12.0
github.com/lukaszraczylo/ask v0.0.0-20240916204100-6e9ef53a62d9
github.com/lukaszraczylo/go-ratecounter v0.1.13
github.com/lukaszraczylo/go-simple-graphql v1.2.89
github.com/lukaszraczylo/oss-telemetry v0.2.5
github.com/redis/go-redis/v9 v9.23.0