Top 50 deadlocks Interview Questions
The most frequently asked deadlocks questions across all roles and companies, ranked by real interview frequency. Updated daily.
Summarize transaction duration and failed requests to support reasoning about concurrent database operations.
ZscalerAudit account balances against posted ledger entries using aggregation and NULL-safe balance calculations.
RevolutSummarize active project staffing with joins, aggregation, NULL handling, and budget classification.
RBCUse PostgreSQL diagnostic snapshots to identify lock blockers and quantify query throughput degradation.
Together AiIdentify waiting PostgreSQL lock requests and the granted requests that block them.
DeelIdentify rolled-back or lock-waiting transactions and summarize their concurrency impact using aggregation and a left join.
DeelExplain how to detect, prevent, and recover from deadlocks in concurrent PostgreSQL transaction workloads.
Dahl Consulting
APS
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