Copyright © 2015-2020 Patryk Zadarnowski «pat@jantar.org».
All rights reserved.
This is a pure Haskell implementation of the PostgreSQL wire protocol for low-level interaction between PostgreSQL client and server.
It implements both the server and client endpoints of the protocol (although
the server endpoint is largely untested at this point in time), abstracted at a
number of levels, from raw message exchange to transaction-oriented monadic
interactions. It explicitly does NOT hide any details of PostgreSQL's data type
encoding, which are left up to higher libraries implemented on top of
postgresql-wire-protocol.
By interacting with the PostgreSQL server at this level, we hope to avoid a
number of limitations of PostgreSQL's official libpq library, enabling use of
Haskell's sophisticated concurrency platform for pipelining of PostgreSQL
messages, natural access from Haskell to PostgreSQL asynchronous notifications,
support for query cancellation that actually works under the GHC virtual
machine, reduction to the amount of memory allocation and more efficient use of
mixed text and binary data exchange formats.