Postgres -- Clients

Postgres official documentation Chapter 55. Frontend/Backend Protocol covers all the details about the client-sever binary protocol, which is a based on top of TCP.

All communication is through a stream of messages. The first byte of a message identifies the message type, and the next four bytes specify the length of the rest of the message (this length count includes itself, but not the message-type byte). The remaining contents of the message are determined by the message type. For historical reasons, the very first message sent by the client (the startup message) has no initial message-type byte.

Java

pgjdbc

See doc for how to build.

./gradlew build -x test