core.cache v0.6.2 Release Notes
===============================

Source code and README at https://github.com/clojure/core.cache

Wiki (in progress) at https://github.com/clojure/core.cache/wiki

core.cache is a Clojure contrib library providing the following features:

Overview

--------

* An underlying `CacheProtocol` used as the base abstraction for implementing 
new synchronous caches

* A `defcache` macro for hooking your `CacheProtocol` implementations into the 
Clojure associative data capabilities.

* Immutable implementations of some basic caching strategies
  - First-in-first-out (FIFOCache)
  - Least-recently-used (LRUCache)
  - Least-used (LUCache)
  - Time-to-live (TTLCache)
  - Soft-Reference cache (SoftCache)
  - Naive cache (BasicCache)

* Implementation of an efficient buffer replacement policy based on the *low 
inter-reference recency set* algorithm (LIRSCache) described in the 
[LIRS](http://citeseer.ist.psu.edu/viewdoc/summary?doi=10.1.1.116.2184) paper

* Factory functions for each existing cache type

Quick example

-------------


    (require '[clojure.core.cache :as cache])

    (def C (cache/fifo-cache-factory {:a 1, :b 2})

    (if (cache/has? C :c)
      (cache/hit C :c)
      (cache/miss C :c 42))

    ;=> {:a 1, :b 2, :c 42}

    (cache/evict C :b)

    ;=> {:a 1}

Absorb
------

You can use core.cache in your 
[Leiningen](https://github.com/technomancy/leiningen) and 
[Cake](https://github.com/flatland/cake) projects with the following 
`:dependencies` directive in your `project.clj` file:

    [org.clojure/core.cache "0.6.2"]

For Maven-driven projects, use the following slice of XML in your `pom.xml`'s 
`<dependencies>` section:

    <dependency>
      <groupId>org.clojure</groupId>
      <artifactId>core.cache</artifactId>
      <version>0.6.2</version>
    </dependency>


Changes from v0.6.1
-------------------

The v0.6.2 version of core.cache contains the following changes:

* Removed reflection warnings.

* Bug fix for LRU, LU and TTL caches disabling the eviction of duplicate keys 
prior to a threshold less than three.

* FIFOCache respects threshold prior to applying its eviction policy.


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