May 2019
Intermediate to advanced
600 pages
20h 46m
English
book
PostgreSQL 11 Administration Cookbook
by Simon Riggs, Gianni Ciolli, Sudheer Kumar Meesala, Sheldon Strauch
Content preview from PostgreSQL 11 Administration Cookbook
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How it works...
Postgres-BDR optimistically assumes that changes on one node do not conflict with changes on other nodes. Any conflicts are detected and then resolved automatically using a predictable last update wins strategy, though custom conflict handlers are supported to allow more precise definition for particular applications.
Applications that regularly cause conflicts won't run very well on Postgres-BDR. Having said that, such applications would also suffer from lock waits and resource contention on a normal database; the effects will be slightly amplified by the distributed nature of Postgres-BDR, but only the existing problems are amplified. Applications that are properly designed to be scalable and contention-free will work well ...
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