cql-io

Cassandra CQL client. https://gitlab.com/twittner/cql-io/

Version on this page:0.16.0
LTS Haskell 9.9:0.16.0
Stackage Nightly 2017-10-20:0.16.0
Latest on Hackage:0.16.0
MPL-2.0 licensed by Toralf Wittner
Maintained by Toralf Wittner

Module documentation for 0.16.0

CQL Cassandra driver

This library uses the cql library which implements Cassandra's CQL protocol and complements it with the neccessary I/O operations. The feature-set includes:

Node discovery

The driver discovers nodes automatically from a small set of bootstrap nodes.

Customisable load-balancing policies

In addition to pre-built LB policies such as round-robin, users of this library can provide their own policies if desired.

Support for connection streams

Requests can be multiplexed over a few connections.

Customisable retry settings

Support for default retry settings as well as local overrides per query.

Prepared queries

Prepared queries are an optimisation which parse and prepare a query only once on Cassandra nodes but execute it many times with different concrete values.

TLS support

Client to node communication can optionally use transport layer security (using HsOpenSSL).

Changes

0.16.0
------
- Update Cabal settings to allow `cql` >= 3.1

0.15.2
------
- Update `async` dependency

0.15.1
------
- Use `retry >= 0.7` instead of internal module

0.15.0
------
- Add experimental TLS support

0.14.5
------
- Add `trans` to execute "lightweight transactions"

0.14.4
------
- Update dependencies

0.14.3
------
- Bugfixes

0.14.2
------
- Export `PrepareStrategy` from `Database.CQL.IO`

0.14.1
------
- Support for prepared queries
- Bugfixes
- `Control.Retry` module update to match version 0.6

0.13.2
------
- Retry on `IOException`
- Update dependencies

0.13.1
------
- Support `monad-control` 1.*

0.13.0
------
- Add `setMaxRecvBuffer` option

0.12.2
------
- Update dependencies

0.12.1
------
- Update dependencies

0.12.0
------
- Remove wait-queue
- Add more type-class instances

0.10.0
------
- Add `MonadClient` type-class
- Add retry settings

0.9.7
-----
- Bugfix release

0.9.6
-----
- Initial release
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