Are you looking to supercharge the performance of your Java EE applications? Then take a look at JCache, the Java caching API. Founder and Director of Payara, Steve Millidge will deliver a code driven talk demonstrating how to integrate JCache with Java EE. Using Payara, Steve will demonstrate using CDI to cache method results automatically and demonstrate how to receive JCache events to push data via WebSockets. This conference, specifically for Java developers, will be set in Göteborg, Sweden from 17 – 18 March, 2015.

1. @payara_fish
Supercharge JavaEE applications using
JCache
Steve Millidge
Founder Payara

2. @payara_fish
What are we going to talk about?

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Imagine!

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Pizza Architecture
PizzaStoreConnector
(3rd Party API)
PizzaStoreBackEnd
(3rd Party Application)
Wet String
Protocol
JAX-RS
Mobile
Interface
Projected 50K Users

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Pizza Store Model
Customer
Address
Order
OrderItemPizza
Store

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Pizza Connector Code

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Pizza Connector Problems
• High Latency
• Multiple API round trips
– Over Wet String
• Wrong Data Model
• Simply won’t scale to user volumes
• Too costly to rewrite
Recognize the Problem!

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How do you speed it up?
JCACHE JavaTM Temporary Caching API

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Quick Cache Code

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Beers All Round

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What Just Happened?

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JCACHE
• Standard Java API for Caching
– JSR107
• API and CDI binding
• Supported by Many Cache Providers
• Built in to Payara
– Uses Hazelcast

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Caching Concepts
Caching
Provider
Cache
Manager
Cache
Entry
Key
Value

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Core Concepts
• CachingProvider
– Retrieves and closes Cache Managers
• CacheManager
– Creates and destroys caches
• Cache
– Contains Objects in Key Value Pairs

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Magic Behind @CacheResult
• CDI Interceptor provided by Payara
• Obtains CacheManager from
CachingProvider
• Creates Cache Name (Based on Method)
• Looks up Cache in CacheManager
• Takes Method Parameter Values and creates
Cache Key
• Does Cache.get before invoking method
• If not in cache invokes method and does
cache.put on the result.

16. @payara_fish
CachingProvider cp = Caching.getCachingProvider();
CacheManager cm = cp.getCacheManager();
MutableConfiguration<String, Stock> config
= new MutableConfiguration<>();
config.setStoreByValue(true)
.setTypes(String.class,String.class)
.setManagementEnabled(true)
.setStatisticsEnabled(true);
Cache<String, String> cache = cm.createCache(“PizzaCache",
config);
String key = createKey();
Cache.put(“Key”,methodCall())

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Further CDI
• @CacheResult
– Caches the result of a method call
• @CachePut
– Cache a specific method parameter
• @CacheRemove
– Removes a cache entry based on
parameters
• @CacheRemoveAll
– Removes all entries in the cache

18. @payara_fish
What is Payara
Payara is 24/7 software support for GlassFish Server
Open Source Edition.
Payara Server is a drop in replacement for GlassFish
Server with guaranteed quarterly releases. We provide
enhancements, bug fixes and patches to upstream
GlassFish Server and dependent libraries including
Tyrus, Eclipse Link, Jersey and others.
Payara Server embeds Hazelcast for Session
Persistence and JSR107 api support.

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Payara and Hazelcast
• Payara embeds Hazelcast for Session
Persistence
• Payara enables Java EE developers to
use JSR107 of raw Hazelcast api
• Payara provides CDI annotations for
Hazelcast

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Adding Further Caching

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Summary
• Using JCache on Payara is simple
• Hazelcast api is built in
• JCache and CDI are built in
• Build micro-services with distributed
caching on Payara Embedded
• Hazelcast Provides Performance,
Resilience and Scalability

22. @payara_fish
More Info
• http://www.payara.co
– Payara information and downloads
• https://github.com/payara/Payara
– Payara Development
• http://www.hazelcast.com
• GET Hazelcast
• https://github.com/smillidge/JCacheWebinar
• Code from this talk

23. Dear Ladies and Gentlemen,
you are now welcome to ”Göteborg 1” for a
lovely lunch that is sponsored by