readcache

package

v0.1.0 Latest Latest Go to latest Published: Sep 27, 2022 License: Apache-2.0 Imports: 11 Imported by: 0

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func SetCacheLimitSize(size int)

type CachePage struct {
	Value []byte
	Size  int64
}

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

func GetReadCacheIns() *ReadCacheInstance

GetReadCacheIns Get a single instance of readCache, if you want to change totalLimitSize, please use Resize method.

func (c *ReadCacheInstance) AddPage(key string, value []byte, size int64) (evict bool)

AddPage adds a byteArray value to the ReadCacheInstance, and Without this key, it will build a new page. Returns true if an eviction occurred.

func (c *ReadCacheInstance) Close()

func (c *ReadCacheInstance) Contains(key string) bool

Contains checks if a key is in the cache.

func (c *ReadCacheInstance) CreatCacheKey(filePath string, offset int64) string

func (c *ReadCacheInstance) Get(key string) (value interface{}, hit bool)

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

func (c *ReadCacheInstance) GetByteSize() int64

GetByteSize Get fileBlockCache byte size

func (c *ReadCacheInstance) GetHitRatio() (Ratio float64)

GetHitRatio get cache hit ratio

func (c *ReadCacheInstance) GetPageSize() int

func (c *ReadCacheInstance) Purge()

Purge clear all data in the cache instance.

func (c *ReadCacheInstance) RefreshOldBuffer()

RefreshOldBuffer clear oldBuffer, put currBuffer to oldBuffer, then clear currBuffer.

func (c *ReadCacheInstance) Remove(filePath string) bool

Remove cache context based on filePath