This post explains how logical replication works. Especially, difference beharvoirs depending of workloads
This article is the result of a series of articles on logical replication in PostgreSQL 10
This one will focus on the implementation of logical replication.
Next PostgreSQL version is approaching. This version comes with an impressive feature list :
Native partionning Sorts and aggregation improvements Better parallelism support : parallel index scan, parallel hash join, parallelism for subquery Extended statistics ICU collation: enable use of “abbreviated keys”, disabled in 9.5.2 due to libc bug. Abbreviated keys brings sort improvements (arround 20-30%). It is usefull when a query need a sort or for index creation. … look at wiki page New in Postgres 10 or releases notes. Another attended feature is logical replication. I will present it in a serie of articles.