Built-in LRU memory cache provider

1. Global Cache

Xorm implements cache support. Defaultly, it's disabled. If enable it, use below code.

cacher := caches.NewLRUCacher(caches.NewMemoryStore(), 1000) engine.SetDefaultCacher(cacher) 

If disable some tables' cache, then:

engine.MapCacher(&user, nil) 

2. Table's Cache If only some tables need cache, then:

cacher := caches.NewLRUCacher(caches.NewMemoryStore(), 1000) engine.MapCacher(&user, cacher) 

Caution:

1. When use Cols methods on cache enabled, the system still return all the columns.

2. When using Exec method, you should clear cache：

engine.Exec("update user set name = ? where id = ?", "xlw", 1) engine.ClearCache(new(User)) 

Cache implement theory below: