spymemcached-jcache

spymemcached-jcache is a JSR107 JCache provider using spymemcached as memcache client.

Features

• namespace support by cache name, cache name should be \w+
• add seperator support, default is $. You can set the seperator in the url, such as memcached://localhost:11211?seperator=$$
• expose native cache api by unwrap
• CacheLoader support to auto load data from backend

Usage

First we should find the caching provider, then create cache manager from the provider, finally we create the cache to operate cache entries.

   SpyCachingProvider provider = new SpyCachingProvider();
   CacheManager cacheManager = provider.getCacheManager(URI.create("memcached://localhost:11211"), null);
   Cache<Integer, Object> cache = cacheManager.getCache("user");
   cache.put(1, "linux_china");
   System.out.println(cache.get(1));
   MemcachedClient memcacheClient = cache.unwrap(MemcachedClient.class);
   Object object = memcacheClient.get("user$1");
   System.out.println(object);

FAQ

set custom seperator

You can set the seperator in the url, such as memcached://localhost:11211?seperator=$$

cache:memcached:localhost:11211?sperator=$$ cache:memcached:localhost:11211,localhost:11212?sperator=$$

add multi memcached hosts

Please add peer param in the url, such as memcached://localhost:11211?peer=localhost:11212;localhost:11213 Hosts splitted by ";".

Convert Cache to Map

  Map<String, Object> store = cache.unwrap(Map.class);

How to get MemcachedClient object to execute some commands?

Two way:

    MemcachedClient memcacheClient = cacheManager.unwrap(MemcachedClient.class);

or

    MemcachedClient memcacheClient = cache.unwrap(MemcachedClient.class);

Todo

• Implement all JSR 107 features
• Concurrency
• event, event filter
• management, statics
• 参考 [email protected]:ehcache/ehcache-jcache.git

Cache class diagram

• Cache Provider
• Cache Manager
• Cache
• Entry
• Key
• Value

As a cache provider, you should ext CacheProvider, CacheManager, Cache, CacheEntry and Cache value.

JCache specification

• compute: processor package, such as javax.cache.Cache.invoke and javax.cache.Cache.invokeAll

Question

• transaction support for getAndRemove etc