iocache

type IOCache ¶

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

IOCache is a read-through cache to:

a) provide a reentrant interface b) deduplicate page pread(2) requests (i.e. no thundering-herd for the same

page file)

c) prevent tainting of the filesystem cache (i.e. ZFS ARC) by artificially

promoting pages from the MRU to the MFU.

d) sized sufficiently large so that we can spend our time faulting in pages

vs performing cache hits.

func New(ctx context.Context, cfg *config.Config, metrics *cgm.CirconusMetrics, fhc *fhcache.FileHandleCache) (*IOCache, error)

func (ioc *IOCache) GetIFPresent(k interface{}) (interface{}, error)

func (ioc *IOCache) Purge()

func (ioc *IOCache) Wait()