Cache Stratejileri - Cache Access Patterns Write-Around

Giriş

Açıklaması şöyle

In Write-around approach, we update the DML commands on the data to database first and then database makes asynchronous calls to the cache for updating the key.

Açıklaması şöyle

Write request goes around the cache straight to DB and acknowledge is sent back, data is not sent to cache. Data is written to the cache when there is the first cache miss.

Açıklaması şöyle

In this design, cache entry only expires when exceeds the pre-set TTL. There is no cache invalidation nor cache update in the write path. The advantage is that the implementation is very simple, but at the cost of even more cache staleness — as long as the TTL window.

Dezavantajı

Written data won't immediately be read back from cache