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Version: 4.5

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' } })

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.