Engineering around WAL Backpressure in Postgres
Engineering solutions for WAL archiving and backpressure management in Postgres.
In Postgres, write operations are managed through the write-ahead log (WAL). When the archiving process cannot keep up with the write speed, WAL accumulates, leading to a full disk and potential system shutdown. ClickHouse Managed Postgres addresses this by implementing backpressure, which limits write bandwidth and ensures continuous archiving. This mechanism allows the database to protect itself even under heavy workloads.