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fix(backend): memory leak in memory caches (#14363)

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* encapsulate `MemoryKVCache<T>`

* remove infinity caches

* encapsulate other caches

* add missing awaits to internally synchronize caches

* implement pull-through caching

* tune cache lifetimes

* optimize cache GC by stopping early

* summarize changes in CHANGELOG.md

* Fix timeout comments

Co-authored-by: かっこかり <67428053+kakkokari-gtyih@users.noreply.github.com>

* add comments about awaiting the redis write

---------

Co-authored-by: かっこかり <67428053+kakkokari-gtyih@users.noreply.github.com>
This commit is contained in:
Hazel K
2024-08-18 00:34:01 -04:00
committed by GitHub
parent 3cd5f86510
commit 9ce44b24b8
12 changed files with 101 additions and 84 deletions
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6
packages/backend/src/core/RoleService.ts
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@@ -127,10 +127,8 @@ export class RoleService implements OnApplicationShutdown, OnModuleInit {
private moderationLogService: ModerationLogService,
private fanoutTimelineService: FanoutTimelineService,
) {
//this.onMessage = this.onMessage.bind(this);
this.rolesCache = new MemorySingleCache<MiRole[]>(1000 * 60 * 60 * 1);
this.roleAssignmentByUserIdCache = new MemoryKVCache<MiRoleAssignment[]>(1000 * 60 * 60 * 1);
this.rolesCache = new MemorySingleCache<MiRole[]>(1000 * 60 * 60); // 1h
this.roleAssignmentByUserIdCache = new MemoryKVCache<MiRoleAssignment[]>(1000 * 60 * 5); // 5m
this.redisForSub.on('message', this.onMessage);
}