caches

Documentation

Overview

Package caches provides LRU cache and Redis cache

Index

• type LCache
  • func NewLRUCache(maxEntries int) *LCache
  • func (c *LCache) Add(key string, value interface{})
  • func (c *LCache) Get(key string) (value interface{}, ok bool)
  • func (c *LCache) GetOrRedis(key string) (value interface{})
  • func (c *LCache) Len() int
  • func (c *LCache) Remove(key string)
  • func (c *LCache) RemoveOldest()
• type SimpleCache
  • func NewCache() *SimpleCache
  • func (c *SimpleCache) Delete(key string)
  • func (c *SimpleCache) Get(key string) (value string)
  • func (c *SimpleCache) GetSet(key, newValue string) (value string)
  • func (c *SimpleCache) Set(key string, value interface{}, px time.Duration)

Types

type LCache

type LCache struct {
	// MaxEntries is the maximum number of cache entries before
	// an item is evicted. Zero means no limit.
	MaxEntries int
	// contains filtered or unexported fields
}

Cache is an LRU cache. It is not safe for concurrent access. But it is not necessary for project samaritan.

var LRUCache *LCache

func NewLRUCache

func NewLRUCache(maxEntries int) *LCache

New creates a new Cache. If maxEntries is zero, the cache has no limit and it's assumed that eviction is done by the caller.

func (*LCache) Add

func (c *LCache) Add(key string, value interface{})

Add adds a value to the cache.

func (*LCache) Get

func (c *LCache) Get(key string) (value interface{}, ok bool)

Get looks up a key's value from the cache.

func (*LCache) GetOrRedis

func (c *LCache) GetOrRedis(key string) (value interface{})

Get looks up a key's value from the cache. If failed, load from redis.

func (*LCache) Len

func (c *LCache) Len() int

Len returns the number of items in the cache.

func (*LCache) Remove

func (c *LCache) Remove(key string)

Remove removes the provided key from the cache.

func (*LCache) RemoveOldest

func (c *LCache) RemoveOldest()

RemoveOldest removes the oldest item from the cache.

type SimpleCache

type SimpleCache struct {
	// contains filtered or unexported fields
}

func NewCache

func NewCache() *SimpleCache

NewCache returns initialized SimpleCache

func (*SimpleCache) Delete

func (c *SimpleCache) Delete(key string)

Delete deletes a key immediately

func (*SimpleCache) Get

func (c *SimpleCache) Get(key string) (value string)

Get looks up a key's value from the cache.

func (*SimpleCache) GetSet

func (c *SimpleCache) GetSet(key, newValue string) (value string)

GetSet looks up a key's value from the cache and set a new value.

func (*SimpleCache) Set

func (c *SimpleCache) Set(key string, value interface{}, px time.Duration)

Set adds a value to the cache.