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.