Result cache

MikroORM has simple result caching mechanism. It works with those methods of EntityManager: find(), findOne(), findAndCount(), findOneOrFail(), count(), as well as with QueryBuilder result methods (including execute).

By default, in memory cache is used, that is shared for the whole MikroORM instance. Default expiration is 1 second.

const res = await em.find(Book, { author: { name: 'Jon Snow' } }, {

populate: ['author', 'tags'],

cache: 50, // set expiration to 50ms

// cache: ['cache-id', 50], // set custom cache id and expiration

// cache: true, // use default cache id and expiration

});

Or with query builder:

const res = await em.createQueryBuilder(Book)

.where({ author: { name: 'Jon Snow' } })

.cache()

.getResultList();

We can change the default expiration as well as provide custom cache adapter in the ORM configuration:

const orm = await MikroORM.init({

resultCache: {

adapter: MemoryCacheAdapter,

expiration: 1000, // 1s

options: {},

},

// ...

});

Custom cache adapters need to implement CacheAdapter interface.