Search Results for "data replication"

...Utilities such as pt-query-digest analyze slow logs and packet captures to surface hotspots and regressions, while pt-online-schema-change applies ALTERs with minimal blocking by copying and swapping tables. Consistency tools like pt-table-checksum and pt-table-sync detect and reconcile replication drift across replicas or shards. Other helpers find duplicate indexes, unused keys, skewed data distributions, and configuration issues that quietly erode performance. Each tool favors guardrails: dry runs, throttling, and resumable operations reduce the risk of harming production workloads. Operators and DBAs rely on the toolkit to bring observability and predictability to busy database fleets without hand-rolled scripts.