rootandClaude Opus 5.5
946fca5e55
Migration 0042_cache adds UNLOGGED kv_cache. PgCache mirrors MP
runtime/cache.py (region, per-key TTL, TLRU maxsize eviction, @cached as
cachedCall); only the storage moves from memory to PG. TMDB request
responses (MP TMDb.request @cached) and recognize results (MP TmdbCache:
same key, {id:0} negative cache with EMPTY_RESULT_CACHE_TTL, type-conflict
checks, backfill after manual assignment) live in kv_cache, shared by all
processes. Settings cache.tmdbTtlHours / tmdbMaxSize / emptyResultTtlSec
map to META_CACHE_EXPIRE / CONF.tmdb / EMPTY_RESULT_CACHE_TTL. TMDB
details now also store posterPath / backdropPath.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
31 lines
1.2 KiB
TypeScript
31 lines
1.2 KiB
TypeScript
import type { Kysely } from "kysely";
|
|
import { dropTables, execDdl } from "../src/migration-helpers.ts";
|
|
|
|
// C2-A 缓存:移植 MP app/runtime/cache.py 的 TTLCache(cachetools TLRUCache:按 region 分区、每个 key 独立 TTL、
|
|
// maxsize 超限先删过期再删最久未用),存储从进程内存换成 PG UNLOGGED 表(不写 WAL,崩溃后清空,正合缓存语义),三进程共享。
|
|
// expires_at 过期即视为未命中;accessed_at 为最近读写时间(LRU 依据);定时任务 cache.sweep 每 10 分钟删过期行。
|
|
|
|
// biome-ignore lint/suspicious/noExplicitAny: 迁移不依赖应用表类型
|
|
export async function up(db: Kysely<any>): Promise<void> {
|
|
await execDdl(
|
|
db,
|
|
`
|
|
create unlogged table kv_cache (
|
|
region text not null,
|
|
key text not null,
|
|
value jsonb not null,
|
|
expires_at timestamptz not null,
|
|
updated_at timestamptz not null default now(),
|
|
accessed_at timestamptz not null default now(),
|
|
primary key (region, key)
|
|
);
|
|
create index kv_cache_expires_idx on kv_cache (expires_at);
|
|
`,
|
|
);
|
|
}
|
|
|
|
// biome-ignore lint/suspicious/noExplicitAny: 同上
|
|
export async function down(db: Kysely<any>): Promise<void> {
|
|
await execDdl(db, dropTables(["kv_cache"]));
|
|
}
|