README
¶
sfcache
This is a caching and cache-filling library with the ability to set expire times on values.
package main
import (
"context"
"fmt"
"time"
"github.com/silas/sfcache"
)
func main() {
loader := func(ctx context.Context, key interface{}) (interface{}, time.Time, error) {
value := fmt.Sprintf("%s-%d", key, time.Now().Unix())
expireTime := time.Now().Add(3 * time.Second)
return value, expireTime, nil
}
c, err := sfcache.New(100, loader)
if err != nil {
panic(err)
}
for i := 0; i < 10; i++ {
v, err := c.Load(context.Background(), "foo")
if err != nil {
panic(err)
}
fmt.Println(v)
time.Sleep(time.Second)
}
}
Documentation
¶
Index ¶
- Variables
- type Cache
- func (c *Cache) Delete(key interface{}) bool
- func (c *Cache) Get(key interface{}) (interface{}, bool)
- func (c *Cache) Load(ctx context.Context, key interface{}) (interface{}, error)
- func (c *Cache) Peek(key interface{}) (interface{}, bool)
- func (c *Cache) Set(key interface{}, value interface{}, expireTime time.Time) bool
- type Loader
Constants ¶
This section is empty.
Variables ¶
View Source
var ( // ErrNotFound is returned when Loader returns a nil or expired value. ErrNotFound = errors.New("cache entry not found") // NoExpireTime disables expire time for a given value. NoExpireTime time.Time // NoValue is a value a Loader can return to cache a nil. NoValue noValue = struct{}{} )
Functions ¶
This section is empty.
Types ¶
type Cache ¶
type Cache struct {
// contains filtered or unexported fields
}
Cache is an LRU cache with cache filling functionality.
func (*Cache) Load ¶
Load looks up a key's value from the cache or populates it from Loader if not found.
Source Files
Directories
¶
| Path | Synopsis |
|---|---|
|
internal
|
|
|
singleflight
Package singleflight provides a duplicate function call suppression mechanism.
|
Package singleflight provides a duplicate function call suppression mechanism. |
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