diff --git a/README.md b/README.md index 7f41e7bd..3c1bd0e5 100644 --- a/README.md +++ b/README.md @@ -1268,8 +1268,9 @@ Write-through is a slow overall operation due to the write operation, but subseq ##### Disadvantage(s): write through -* When a new node is created due to failure or scaling, the new node will not cache entries until the entry is updated in the database. Cache-aside in conjunction with write through can mitigate this issue. +* When a new node is created due to failure or scaling, the new node will not cache entries until the entry is updated in the database. Cache-aside in conjunction with write through can mitigate this issue. * Most data written might never be read, which can be minimized with a TTL. +* Failure in "Store in the DB" may lead to cache storing data that was never committed to the database. For a strong consistency, it's necessary to update the cache and the database in a distributed transaciton that will roll back the cache in case of database failure. This adds complexity to the system. #### Write-behind (write-back)