AlexWebLab

Explore a wide range of web development topics, from JavaScript to React and beyond, and uncover valuable insights to enhance your skills.

Latest 2 articles:

Single-Leader Replication: The Contract Behind Replica Lag and Failover

July 29, 2026Data Systems

Leader-follower replication makes ordering writes straightforward, but acknowledgement policy, replica lag, and failover determine whether the product stays correct when the network or a node stops cooperating.

Dataflow Through Databases and Services: Why Compatibility Is a Running System

July 26, 2026Data Systems

Data flows through databases, archives, REST APIs, RPC frameworks, load balancers, and service discovery layers. Every hop creates a different compatibility contract, and the UI feels the results immediately.

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