Method: Gitlab::Database::LoadBalancing::Session#use_replicas_for_read_queries

Defined in:
lib/gitlab/database/load_balancing/session.rb

#use_replicas_for_read_queries ⇒ Object

Indicates that the read SQL statements from anywhere inside this blocks should use a replica, regardless of the current primary stickiness or whether a write query is already performed in the current session. This interface is reserved mostly for performance purpose. This is a good tool to push expensive queries, which can tolerate the replica lags, to the replicas.

Write and ambiguous queries inside this block are still handled by the primary.



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# File 'lib/gitlab/database/load_balancing/session.rb', line 56

def use_replicas_for_read_queries
  previous_flag = @use_replicas_for_read_queries
  @use_replicas_for_read_queries = true
  yield
ensure
  @use_replicas_for_read_queries = previous_flag
end