In all the replication methodologies, we have seen a common issue which all of the replication methods fail to solve completely and that is handling…

In Introduction to Leaderless Replication we saw that Quorum plays a huge part. We need some way to ensure that storage operations are persisted correctly…

Up until now in a single leader and multi-leader replication our assumption was that client will send an update request to leader which in turn…

We ended our introduction to multi-leader replication system by stating that one of the main challenges with a multi-leader replication is conflict resolution. When a…

Answer to above question is a resounding YES! Up until now we have covered leader-follower based replication where all the writes go through the leader…

In the last post about comparison between synchronous & asynchronous replication, we saw how synchronous replication can end up blocking our client when trying to…

Replication solves another problem in addition to reliability. It allows the system to scale along with the increase in request load. In a typical leader-follower…

Failure is the norm in distributed systems. It’s a question of when and not if. These failures can be due to various reasons. Node failure…

In case of a leader-follower system for replication, a typical flow looks like as following: Leader accepts all update operations from clients Leader replicates any…

As long as we are dealing with a system where our database lives on a server which never fails and the data that database stores…