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# Which Problems Are Solved get instance by domain cannot provide an instance id because it is not known at that time. This causes a full table scan on the fields table because current indexes always include the `instance_id` column. # How the Problems Are Solved Added a specific index for this query. # Additional Context If a system has many fields and there is no cache hit for the given domain this query can heaviuly influence database CPU usage, the newly added resolves this problem.
3 lines
187 B
SQL
3 lines
187 B
SQL
CREATE INDEX CONCURRENTLY IF NOT EXISTS fields_instance_domains_idx
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ON eventstore.fields (object_id) INCLUDE (instance_id)
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WHERE object_type = 'instance_domain' AND field_name = 'domain'; |