# caffeinesource
**Repository Path**: dancer4code/caffeinesource
## Basic Information
- **Project Name**: caffeinesource
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Apache-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No
## Statistics
- **Stars**: 0
- **Forks**: 2
- **Created**: 2021-09-09
- **Last Updated**: 2021-09-09
## Categories & Tags
**Categories**: Uncategorized
**Tags**: None
## README
[](https://github.com/ben-manes/caffeine/actions?query=workflow%3Abuild)
[](https://coveralls.io/r/ben-manes/caffeine?branch=master)
[](https://maven-badges.herokuapp.com/maven-central/com.github.ben-manes.caffeine/caffeine)
[](http://www.javadoc.io/doc/com.github.ben-manes.caffeine/caffeine)
[](http://www.apache.org/licenses/LICENSE-2.0.html)
[](http://stackoverflow.com/questions/tagged/caffeine)
Caffeine is a [high performance][benchmarks], [near optimal][efficiency] caching library. For more
details, see our [user's guide][users-guide] and browse the [API docs][javadoc] for the latest
release.
### Cache
Caffeine provides an in-memory cache using a Google Guava inspired API. The improvements draw on our
experience designing [Guava's cache][guava-cache] and [ConcurrentLinkedHashMap][clhm].
```java
LoadingCache graphs = Caffeine.newBuilder()
.maximumSize(10_000)
.expireAfterWrite(Duration.ofMinutes(5))
.refreshAfterWrite(Duration.ofMinutes(1))
.build(key -> createExpensiveGraph(key));
```
#### Features at a Glance
Caffeine provides flexible construction to create a cache with a combination of the following features:
* [automatic loading of entries][population] into the cache, optionally asynchronously
* [size-based eviction][size] when a maximum is exceeded based on [frequency and recency][efficiency]
* [time-based expiration][time] of entries, measured since last access or last write
* [asynchronously refresh][refresh] when the first stale request for an entry occurs
* keys automatically wrapped in [weak references][reference]
* values automatically wrapped in [weak or soft references][reference]
* [notification][listener] of evicted (or otherwise removed) entries
* [writes propagated][compute] to an external resource
* accumulation of cache access [statistics][statistics]
In addition, Caffeine offers the following extensions:
* [JSR-107 JCache][jsr107]
* [Guava adapters][guava-adapter]
* [Simulation][simulator]
Use Caffeine in a community provided integration:
* [Play Framework][play]: High velocity web framework
* [Micronaut][micronaut]: A modern, full-stack framework
* [Spring Cache][spring]: As of Spring 4.3 & Boot 1.4
* [Akka][akka-http]: Build reactive applications easily
* [Quarkus][quarkus]: Supersonic Subatomic Java
* [Scaffeine][scaffeine]: Scala wrapper for Caffeine
* [ScalaCache][scala-cache]: Simple caching in Scala
* [Camel][camel]: Routing and mediation engine
* [JHipster][jhipster]: Generate, develop, deploy
Powering infrastructure near you:
* [Dropwizard][dropwizard]: Ops-friendly, high-performance, RESTful APIs
* [Cassandra][cassandra]: Manage massive amounts of data, fast
* [Accumulo][accumulo]: A sorted, distributed key/value store
* [HBase][hbase]: A distributed, scalable, big data store
* [Apache Solr][solr]: Blazingly fast enterprise search
* [Infinispan][infinispan]: Distributed in-memory data grid
* [Redisson][redisson]: Ultra-fast in-memory data grid
* [OpenWhisk][open-whisk]: Serverless cloud platform
* [Corfu][corfu]: A cluster consistency platform
* [Grails][grails]: Groovy-based web framework
* [Finagle][finagle]: Extensible RPC system
* [Neo4j][neo4j]: Graphs for Everyone
* [Druid][druid]: Real-time analytics
### In the News
* An in-depth description of Caffeine's architecture.
* [Design of a Modern Cache: part #1][modern-cache-1], [part #2][modern-cache-2] ([slides][modern-cache-slides]) at [HighScalability][HighScalability]
* Caffeine is presented as part of research papers evaluating its novel eviction policy.
* [TinyLFU: A Highly Efficient Cache Admission Policy][tinylfu] by Gil Einziger, Roy Friedman, Ben Manes
* [Adaptive Software Cache Management][adaptive-tinylfu] by Gil Einziger, Ohad Eytan, Roy Friedman, Ben Manes
* [Lightweight Robust Size Aware Cache Management][size-tinylfu] by Gil Einziger, Ohad Eytan, Roy Friedman, Ben Manes
### Download
Download from [Maven Central][maven] or depend via Gradle:
```gradle
implementation 'com.github.ben-manes.caffeine:caffeine:3.0.3'
// Optional extensions
implementation 'com.github.ben-manes.caffeine:guava:3.0.3'
implementation 'com.github.ben-manes.caffeine:jcache:3.0.3'
```
See the [release notes][releases] for details of the changes.
Snapshots of the development version are available in
[Sonatype's snapshots repository][snapshots].
[benchmarks]: https://github.com/ben-manes/caffeine/wiki/Benchmarks
[users-guide]: https://github.com/ben-manes/caffeine/wiki
[javadoc]: http://www.javadoc.io/doc/com.github.ben-manes.caffeine/caffeine
[guava-cache]: https://github.com/google/guava/wiki/CachesExplained
[clhm]: https://code.google.com/p/concurrentlinkedhashmap
[population]: https://github.com/ben-manes/caffeine/wiki/Population
[size]: https://github.com/ben-manes/caffeine/wiki/Eviction#size-based
[time]: https://github.com/ben-manes/caffeine/wiki/Eviction#time-based
[refresh]: https://github.com/ben-manes/caffeine/wiki/Refresh
[reference]: https://github.com/ben-manes/caffeine/wiki/Eviction#reference-based
[listener]: https://github.com/ben-manes/caffeine/wiki/Removal
[compute]: https://github.com/ben-manes/caffeine/wiki/Compute
[statistics]: https://github.com/ben-manes/caffeine/wiki/Statistics
[simulator]: https://github.com/ben-manes/caffeine/wiki/Simulator
[guava-adapter]: https://github.com/ben-manes/caffeine/wiki/Guava
[jsr107]: https://github.com/ben-manes/caffeine/wiki/JCache
[maven]: https://maven-badges.herokuapp.com/maven-central/com.github.ben-manes.caffeine/caffeine
[releases]: https://github.com/ben-manes/caffeine/releases
[snapshots]: https://oss.sonatype.org/content/repositories/snapshots/com/github/ben-manes/caffeine/
[efficiency]: https://github.com/ben-manes/caffeine/wiki/Efficiency
[tinylfu]: https://dl.acm.org/authorize?N41277
[adaptive-tinylfu]: https://dl.acm.org/authorize?N675830
[size-tinylfu]: https://arxiv.org/abs/2105.08770
[modern-cache-1]: http://highscalability.com/blog/2016/1/25/design-of-a-modern-cache.html
[modern-cache-2]: http://highscalability.com/blog/2019/2/25/design-of-a-modern-cachepart-deux.html
[modern-cache-slides]: https://docs.google.com/presentation/d/1NlDxyXsUG1qlVHMl4vsUUBQfAJ2c2NsFPNPr2qymIBs
[highscalability]: http://highscalability.com
[spring]: https://docs.spring.io/spring/docs/current/spring-framework-reference/integration.html#cache-store-configuration-caffeine
[scala-cache]: https://github.com/cb372/scalacache
[scaffeine]: https://github.com/blemale/scaffeine
[hbase]: https://hbase.apache.org
[cassandra]: http://cassandra.apache.org
[solr]: https://solr.apache.org/
[infinispan]: https://infinispan.org
[neo4j]: https://github.com/neo4j/neo4j
[finagle]: https://github.com/twitter/finagle
[druid]: https://druid.apache.org/docs/latest/configuration/index.html#cache-configuration
[jhipster]: https://www.jhipster.tech/
[open-whisk]: https://openwhisk.apache.org/
[camel]: https://github.com/apache/camel/blob/master/components/camel-caffeine/src/main/docs/caffeine-cache-component.adoc
[corfu]: https://github.com/CorfuDB/CorfuDB
[akka-http]: https://doc.akka.io/docs/akka-http/current/common/caching.html
[micronaut]: https://docs.micronaut.io/latest/guide/index.html#caching
[play]: https://www.playframework.com/documentation/latest/JavaCache
[redisson]: https://github.com/redisson/redisson
[accumulo]: https://accumulo.apache.org
[dropwizard]: https://www.dropwizard.io
[grails]: https://grails.org
[quarkus]: https://quarkus.io