ANNOUNCE: Hasql: A minimalistic general high level API for relational databases
Nikita Volkov
nikita.y.volkov at mail.ru
Tue Oct 28 15:02:59 UTC 2014
This library takes a mission of upgrading the experience of dealing with
relational databases in Haskell. It’s robust, it’s API is very concise, yet
it’s packed with powerful features like the following:
-
An abstraction over transactions, which provides an automated resolution
of conflicts. The API ensures that you’re only able to perform a specific
set of actions in the transaction context, which allows Hasql to safely
resolve conflicting transactions by automatically retrying them. This is
much inspired by STM and ST.
-
Support for cursors. Allows to fetch virtually limitless result sets in
a constant memory using streaming.
-
Employment of prepared statements. Every statement you emit gets
prepared and cached. This raises the performance of the backend.
-
Automated management of resources related to connections, transactions
and cursors.
-
A built-in connections pool.
-
Type-level generation of templates. You just can’t write a statement
with an incorrect number of placeholders.
-
Mapping to any types actually supported by the backend.
For a basic tutorial and a demonstration please visit the following link:
https://github.com/nikita-volkov/hasql/blob/master/demo/Main.hs
Also please join the main discussion thread accompanying the release:
http://www.reddit.com/r/haskell/comments/2kkhgo/announce_hasql_a_minimalistic_general_high_level/
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