Cassaforte is a Clojure client for Apache Cassandra. It is built around CQL 3 and focuses on ease of use. You will likely find that using Cassandra from Clojure has never been so easy.
2.0.0-rc is a release candidate for 2.0.
Changes between 1.3.x and 2.0.0-rc1
Compared to 1.3.x,
2.0.0-rc1 has one major breaking API change.
Client (Session) is Explicit Argument
All Cassaforte public API functions that issue requests to Cassandra now require a client (session) to be passed as an explicit argument:
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Hayt Upgraded to 2.0
Hayt was upgraded to 2.0.
clojurewerkz.cassandra.cql/iterate-table Now Terminates
clojurewerkz.cassandra.cql/iterate-table no longer produces an infinite
It is now possible to connect to a node and switch to a namespace using a URI string:
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Cassandra 2.1 Compatibility
Cassaforte 2.0 is compatible with Cassandra 2.1.
Prepared Statement Cache Removed
Prepared statement cache was affecting client correctness in some cases and was removed.
Policy-related functions from
clojurewerkz.cassaforte.client were extracted into
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DataStax Java Driver Update
DataStax Java driver has been updated to
Cassandra Sessions Compatible with with-open
Session#shutdown was renamed to
cassandra-driver-core. Cassaforte needs to be adapted to that.
Contributed by Jarkko Mönkkönen.
TLS and Kerberos Support
Cassaforte now supports TLS connections and Kerberos authentication via DataStax CQL extensions.
:ssl connection option now can be a map with two keys:
Optionally, an instance of
can be provided via the
:ssl-options connection option.
Contributed by Max Barnash.
Clojure 1.4 and 1.5 Support Dropped
Cassaforte now requires Clojure
Collections Converted to Clojure Data Structures
Cassandra maps, sets and lists are now automatically converted to their immutable Clojure counterparts.
Atomic Batches Support
Atomic batches are now easier to use with Cassaforte:
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Query DSL Taken From Hayt 2.0
Cassaforte no longer tries to support query condition DSLs for both Hayt 1.x and Hayt 2.0. Hayt 2.0 is the only supported flavour now and is the future.
Some examples of the changes:
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As it’s easy to see, the new condition style closer resembles Clojure itself and thus was a reasonable decision on behalf of Hayt developers.
Keyspace as Option
It is now possible to choose keyspace via an option:
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Contributed by Max Barnash (DataStax).
Clojure 1.7.0-alpha2+ Compatibility
Cassaforte is now compatible with Clojure
1.7.0-alpha2 and later versions.
GH issue: #60.
Support for overriding default SSL cipher suites
:cipher-suites key in the
:ssl connection option allows to specify cipher suites
that are enabled when connecting to a cluster with SSL.
The value of this key is a Seq of Strings (e.g. a vector) where each item specifies a cipher suite:
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:cipher-suites key is optional and may be omitted, in which case Datastax Java driver’s
default cipher suites (
com.datastax.driver.core.SSLOptions/DEFAULT_SSL_CIPHER_SUITES) are enabled.
This can be used to work around the need to install Java Cryptography Extension (JCE) Unlimited Strength
Jurisdiction Policy Files required by the default set of cipher suites.
is a suite in the default set that works with the standard JCE. E.g. by specifying just that one,
as in the code example, the standard JCE is enough.
Contributed by Juhani Hietikko.
GH issue: #61.
News and Updates
Cassaforte is a ClojureWerkz Project
Cassaforte is part of the group of libraries known as ClojureWerkz, together with
- Langohr, a Clojure client for RabbitMQ that embraces the AMQP 0.9.1 model
- Monger, a Clojure MongoDB client for a more civilized age
- Elastisch, a minimalistic Clojure client for ElasticSearch
- EEP, a Clojure library for stream (event) processing
- Neocons, a Clojure client for the Neo4J REST API
- Quartzite, a powerful scheduling library
and several others. If you like Cassaforte, you may also like our other projects.