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@tc-libs/app-cache

v3.14.0

Published

Astrazione cache per NestJS basata su `@nestjs/cache-manager`. Supporta due modalita:

Downloads

826

Readme

@tc-libs/app-cache

Astrazione cache per NestJS basata su @nestjs/cache-manager. Supporta due modalita:

  • cache in-memory quando enabled e false
  • cache Redis quando enabled e true

Il package viene usato soprattutto dai repository Mongo del monorepo per cacheare query e count.

Registrazione

AppCacheModule.register(
  true,
  {
    enabled: true,
    ttl: 60,
    server: {
      host: '127.0.0.1',
      port: 6379,
    },
  },
  true,
);

Versione async:

AppCacheModule.registerAsync(
  true,
  {
    imports: [ConfigModule],
    inject: [ConfigService],
    useFactory: async (config: ConfigService) => ({
      enabled: true,
      ttl: 60,
      server: {
        host: config.getOrThrow<string>('REDIS_HOST'),
        port: config.getOrThrow<number>('REDIS_PORT'),
      },
    }),
  },
  true,
);

Servizio esportato

AppCacheService espone i metodi usati dal resto del monorepo:

  • getCachedDataByQuery(functionName, find, options)
  • getCachedDataByKey(key)
  • saveToCache(key, data, options)

Lato repository il pattern tipico e:

const { data, key } = await this.cache.getCachedDataByQuery(
  'findOne',
  find,
  options,
);

if (data) return data;

this.cache.saveToCache(key, result, options);

Note operative

  • La chiave cache viene derivata da functionName, filtro e opzioni tramite hash SHA1 Base64.
  • La cache viene usata solo se il modulo e abilitato e l'operazione passa options.caching.enabled.
  • Se vuoi una chiave custom puoi passare options.caching.key.

Export pubblici

import {
  AppCacheModule,
  AppCacheService,
  ICachingOptions,
} from '@tc-libs/app-cache';

Sviluppo

nx build app-cache
nx test app-cache