cache

Documentation

Overview

Package cache provide caching systems for images.

Index

• func Tokenize(req *http.Request) (string, error)
• type Cache
  • func New(conf config.Config) (Cache, error)
• type MemoryCache
  • func (c *MemoryCache) Get(key string) ([]byte, error)
  • func (c *MemoryCache) Set(key string, v []byte, expiry time.Duration) error
• type NoneCache
  • func (c *NoneCache) Get(key string) ([]byte, error)
  • func (c *NoneCache) Set(_ string, _ []byte, _ time.Duration) error
• type RedisCache
  • func (c *RedisCache) Get(key string) ([]byte, error)
  • func (c *RedisCache) Set(key string, v []byte, expiry time.Duration) error

Functions

func Tokenize

func Tokenize(req *http.Request) (string, error)

Tokenize generate unique key for request caching strategy.

Types

type Cache

type Cache interface {
	Get(key string) ([]byte, error)
	Set(key string, val []byte, expiry time.Duration) error
}

Cache Define cache system interface.

func New

func New(conf config.Config) (Cache, error)

New is the cache factory to instantiate a new instance of cache.

type MemoryCache

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

MemoryCache in-memory cache system struct.

func (*MemoryCache) Get

func (c *MemoryCache) Get(key string) ([]byte, error)

Get return cached image with given key.

func (*MemoryCache) Set

func (c *MemoryCache) Set(key string, v []byte, expiry time.Duration) error

Set add a value into in-memory with custom expiry.

type NoneCache

type NoneCache struct{}

NoneCache dummy cache system.

func (*NoneCache) Get

func (c *NoneCache) Get(key string) ([]byte, error)

Get always return nil with not found error.

func (*NoneCache) Set

func (c *NoneCache) Set(_ string, _ []byte, _ time.Duration) error

Set always return nil.

type RedisCache

type RedisCache struct{} // client *redis.Client

RedisCache hold redis client.

func (*RedisCache) Get

func (c *RedisCache) Get(key string) ([]byte, error)

Get return cached media with given key from redis.

func (*RedisCache) Set

func (c *RedisCache) Set(key string, v []byte, expiry time.Duration) error

Set add a new image in cache with custom expiry.