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Database health
Check replication lag, slow queries, connection use, cache hit ratio and deadlocks.
Reliability & managed IT servicesHow it's worked out
- Connection use = in use ÷ maximum. Slow share = slow queries ÷ queries
- Peak values from the same hour
NoteFor OLTP workloads a cache hit ratio below about 99% usually means memory pressure or missing indexes; check your engine’s guidance.
Source: PostgreSQL and MySQL monitoring documentation; DBA practice
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