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We changed Postgres to send WAL to safekeepers and read from page servers: https://neon.tech/blog/architecture-decisions-in-neon/ https://neon.tech/blog/archite
by nikita 4y ago
We changed Postgres to send WAL to safekeepers and read from page servers: https://neon.tech/blog/architecture-decisions-in-neon/ https://neon.tech/blog/architecture-decisions-in-neon/
- asadawadia 4y agoSafekeeper to page servers take some time what happens when the compute server issues a read for something that has made it to the WAL servers but not the page servers?
- kelvich 4y agoPostgres tracks maximal LSN among the evicted pages and passes it to the pageserver in the page request. If the pageserver hasn't received that LSN, it will wait for it to arrive.