What is PostgreSQL replication lag and how can I monitor it?
An example of an AI chatbot conversation about PostgreSQL replication lag and monitoring techniques.
What is PostgreSQL replication lag and how can I monitor it?
PostgreSQL replication lag refers to the delay between the primary database and its replicas. You can monitor it using the pg_stat_replication view.
What metrics should I look for in pg_stat_replication?
Key metrics include pg_xlog_replay_location, pg_xlog_send_location, and state. These help you assess the lag.
How can I reduce replication lag?
To reduce lag, consider optimizing your queries, increasing the network bandwidth, or adjusting the wal_sender_timeout setting.
Are there any tools to help monitor replication lag?
Yes, tools like pgAdmin, Pghero, and custom scripts can help you visualize and monitor replication lag effectively.
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