Tag
Databases
2 diagram-led guides on Databases by Abhishek Goyal.
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Guide
Concurrency Control in Distributed Systems
Why local locks stop working the moment you scale past one instance, and how optimistic and pessimistic concurrency control pick up the slack — with isolation levels, lock types, and working Spring/JPA code.
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Guide
Backend Under Load: Eight Failure Modes
A system design interview field guide to how backends actually degrade — connection pool saturation, cache stampedes, lock contention, hot partitions, slow queries, network bottlenecks, and GC pauses — plus how they cascade into each other in a real incident.