Production Problems

Problem Handling Ideas

• Problem definition, determine whether it is internal system problem or, other system problem, or network reason
• If serious, consider rollback (or restart application) first, solve problem first, then find reason for problem
• Reason: Connection pool problem (used in thread pool), slow SQL problem, Full GC problem etc.

Common Problem Handling Solutions:

• High CPU usage: Check if there are infinite loops, resource contention, etc., use performance analysis tools to locate specific code positions
• Memory leak: Through heap dump analysis, find objects occupying large memory, check if object lifecycle management is reasonable
• Database connection exception: Check connection pool configuration, network status, and if there are connections not released in time

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