cstore_fdw --- Columnar store for analytics. The columnar nature delivers performance by reading only relevant data from disk, and it may compress data 6x-10x to reduce space requirements for data archival. pg_cron --- Run periodic jobs directly from the database. postgresql-topn --- Returns the top values in a database according to some criteria. Uses an approximation algorithm to provide fast results with modest compute and memory resources. postgresql-hll - --HyperLogLog data structure as a native data type. It's a fixed-size, set-like structure used for distinct value counting with tunable precision.
