Answer
The slow query log records queries that exceed a specified execution time. It helps identify unoptimized queries or missing indexes.
Quick Answer
Slow query log records queries that exceed long_query_time seconds. Enable: slow_query_log=ON, slow_query_log_file=/path/to/log, long_query_time=1.0. Also log queries without indexes: log_queries_not_using_indexes=ON. Use mysqldumpslow or pt-query-digest to analyze the log and find top offenders. Enable in production to catch performance regressions early.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ