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levkk 5 days ago

Forgot to add that to the article, but yes, we parse the statement and route SelectStmt[1] to replicas. If there is an UPDATE in the SELECT, we don't handle that at the moment, but can be easily added.

[1] https://docs.rs/pg_query/6.0.0/pg_query/protobuf/struct.Sele...

hamburglar 5 days ago | parent [-]

Do you have to traverse the syntax tree to determine that?

levkk 5 days ago | parent [-]

Yup.