![]() ![]() I’d be remiss not to mention that Render was the first cloud provider I know to support PostgreSQL 14, making it available on the same day PostgreSQL 14 was released and giving our customers access to all these exciting improvements in just a few clicks. There are many more new features and improvements, which you can read about in the PostgreSQL 14 release announcement or compare across versions in the feature matrix (deselect all versions except 14 and the one you want to compare to and select “Hide unchanged features”). Of course, these results are dependent on your hardware, schema, data, and queries, so you may not see the same results, but the consensus seems to be that PostgreSQL’s handling of concurrent connections has improved significantly. ![]() At 10,000 connections, that improvement went up to 50%. 3 Answers Sorted by: 28 you have to unnest the array of json-objects first using the function ( jsonarrayelements or jsonbarrayelements if you have jsonb data type ), then you can access the values by specifying the key. Email here is the key, while jsonlearninggmail.c om represents the value. At 5000 active connections, they saw about a 20% improvement in throughput over PostgreSQL 13. Here’s an example of a key-value pair email: . PostgreSQL includes some functions that let you expand the JSON fields and display them in different rows. The folks at pganalyze did some great performance testing using pgbench to verify this. However, PostgreSQL 14’s handling of multiple client connections will likely be the performance improvement noticeable to the most people. ( 1 row ) Improved Handling of Concurrent ConnectionsĪ lot has happened behind the scenes to improve PostgreSQL performance. ![]() DROP TABLE reservation CREATE TABLE reservation (room int, during tsmultirange ) INSERT INTO reservation VALUES ( 1108, tsmultirange ( ![]()
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