Why it matters
This feature allows users to specify priority levels for replicas when using a Postgres dictionary source in ClickHouse. It helps in managing failover and load balancing by defining which PostgreSQL replicas should be preferred for dictionary queries, improving reliability and performance.How to use it
Users can configure the priority of PostgreSQL replicas in the dictionary source settings by specifying replica connection details along with their priorities, enabling ClickHouse to select the appropriate replica based on the configured priorities.