UmputunandGitHub
7aee7add08
* move backend code #99 * adjust drone build for backend subdir * move .rest to backend
51 lines
1.3 KiB
Go
51 lines
1.3 KiB
Go
package cache
|
|
|
|
import "github.com/pkg/errors"
|
|
|
|
// Option func type
|
|
type Option func(lc *memoryCache) error
|
|
|
|
// MaxValSize functional option defines the largest value's size allowed to be cached
|
|
// By default it is 0, which means unlimited.
|
|
func MaxValSize(max int) Option {
|
|
return func(lc *memoryCache) error {
|
|
lc.maxValueSize = max
|
|
if max <= 0 {
|
|
return errors.Errorf("negative size for MaxValSize, %d", max)
|
|
}
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// MaxKeys functional option defines how many keys to keep.
|
|
// By default it is 0, which means unlimited.
|
|
func MaxKeys(max int) Option {
|
|
return func(lc *memoryCache) error {
|
|
lc.maxKeys = max
|
|
if max <= 0 {
|
|
return errors.Errorf("negative size for MaxKeys, %d", max)
|
|
}
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// MaxCacheSize functional option defines the total size of cached data.
|
|
// By default it is 0, which means unlimited.
|
|
func MaxCacheSize(max int64) Option {
|
|
return func(lc *memoryCache) error {
|
|
lc.maxCacheSize = max
|
|
if max <= 0 {
|
|
return errors.Errorf("negative size or MaxCacheSize, %d", max)
|
|
}
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// PostFlushFn functional option defines how callback function called after each Flush.
|
|
func PostFlushFn(postFlushFn func()) Option {
|
|
return func(lc *memoryCache) error {
|
|
lc.postFlushFn = postFlushFn
|
|
return nil
|
|
}
|
|
}
|