Gimme Caching - The JCache Way

www.hazelcast.com@noctarius2k

/** * Gimme Caching * The JCache Way */

Interactive!

Disclaimer# A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x00002aaaaaf6d9c3, pid=2185, tid=1086892352 # # JRE version: 6.0_21-b06 # Java VM: Java HotSpot(TM) 64-Bit Server VM (17.0-b16 mixed mode linux-amd64 ) # # An error report file with more information is saved as: # /path/to/hs_err_pid2185.log # # This presentation may include certain forward-looking statements and projections provided by the Company. Any such # statements and projections reflect various estimates and assumptions by the Company concerning anticipated # results. These statements involve risks, uncertainties and assumptions and are based on the current estimates and # assumptions of the management of the Company as of the date of this presentation and are subject to uncertainty and # changes. No representations or warranties are made by the Company as to the accuracy of any such statements or # projections. Whether or not any such forward-looking statements or projections are in fact achieved will depend upon # future events some of which are not within the control of the Company. Accordingly, actual results may vary from the # projected results and such variations may be material. Statements contained herein describing documents and # agreements are summaries only and such summaries are qualified in their entirety by reference to such documents # and agreements.

Who’s that dude?

• Chris(toph) Engelbert • Twitter fanatic: @noctarius2k • Weird 9+ Java-Years • Performance, GC, Fairytales • Apache Committer • Gaming, Travel Management, …

The www.hazelcast.ninja

Who’s that dude?

… What is Caching?OOO( )

Collect, store …

…access fast when necessary!…access fast when necessary!

www.hazelcast.com

Fast Delivery

‘In-Memory Caching’

L1 Cache Reference L2 Cache Reference Main Memory Reference 1K send over 1 Gbps Network 4K read from SSD Seek on Spinning Disk Send Packet CA->AMS->CA

0.5 ns 7 ns

100 ns 10,000 ns

150,000 ns 10,000,000 ns

150,000,000 ns

0.01 ms 0.15 ms

10 ms 150 ms

Evolution of:- Memory-Price- Memory-Size

Caches

http://gadizmo.com/roll-your-own-with-the-ham-dogger.php

Roll Your Own!Caches Are Simple

Caches Are Simple!public class Cache<K, V> { private final Map<K, V> cache = new CHM<>();

public void put(K key, V value) { cache.put(key, value); }

public V get(K key) { return cache.get(key); } }

Even With TTL!

And Auto-Cleanup

What Is Wrong?

O(n)5 mio

Entries

It was a trap!

Distributed Caching!

www.hazelcast.com

Data Partitioning

www.hazelcast.com

Data Partitioning

JCache?

A Java Caching Standard!

No need to ## care aboutProprietary Solutions

anymore!

“Vendor Independent”

http://technoodling.net/mili-power-crystal-battery-pack-review/

Terracotta /EHcache

OracleCoherence

Infinispan

JavaCollections

Hazelcast

JCache

Custom

JCache Impementations

Hazelcast

Hazelcast Ehcache

Hazelcast EhcacheInfinispan

Hazelcast

Apache IgniteEhcache

Infinispan

Hazelcast Coherence

Apache IgniteEhcache

Infinispan

Hazelcast CoherenceInfinispanApache Ignite How Dare You Are To Call You JCache?

Ehcache

Success!Feels like

Demo Time

// Ask the JCache API for implementationsCachingProvider cachingProvider = Caching.getCachingProvider();

Demo Time

Caching.getCachingProvider(myClassLoader); Caching.getCachingProvider("c.h.c.CachingProvider");

Demo Time

Caching.getCachingProvider(myClassLoader); Caching.getCachingProvider("c.h.c.CachingProvider");

// Ask the JCache API for implementationsCachingProvider cachingProvider = Caching.getCachingProvider(); // Build cache scope, multiple can exist CacheManager cacheManager = cachingProvider.getCacheManager();

Demo Time

// Ask the JCache API for implementationsCachingProvider cachingProvider = Caching.getCachingProvider(); // Build cache scope, multiple can exist CacheManager cacheManager = cachingProvider.getCacheManager();

Demo Time

cachingProvider.getCacheManager(myURI, myClassLoader)

// Ask the JCache API for implementationsCachingProvider cachingProvider = Caching.getCachingProvider(); // Build cache scope, multiple can exist CacheManager cacheManager = cachingProvider.getCacheManager();// Configure the new cache Configuration<Integer, String> configuration = new MutableConfiguration<Integer, String>() .setTypes(Integer.class, String.class);

Demo Time

// Ask the JCache API for implementationsCachingProvider cachingProvider = Caching.getCachingProvider(); // Build cache scope, multiple can exist CacheManager cacheManager = cachingProvider.getCacheManager();// Configure the new cache Configuration<Integer, String> configuration = new MutableConfiguration<Integer, String>() .setTypes(Integer.class, String.class); // Create the actual cache Cache<Integer, String> cache = cacheManager.createCache("name", configuration);

Demo Time

// Ask the JCache API for implementationsCachingProvider cachingProvider = Caching.getCachingProvider(); // Build cache scope, multiple can exist CacheManager cacheManager = cachingProvider.getCacheManager();// Configure the new cache Configuration<Integer, String> configuration = new MutableConfiguration<Integer, String>() .setTypes(Integer.class, String.class); // Get the actual cache Cache<Integer, String> cache = cacheManager.getCache("name", Integer.class, String.class);

Demo Time

// Configure the new cache Configuration<Integer, String> configuration = …;// Get the actual cache Cache<Integer, String> cache = cacheManager.getCache(…);

if (cache == null) { try { cache = cacheManager.createCache("name", configuration); } catch (CacheException e) { cache = cacheManager.getCache(…); } }

Demo Time

Demo Time

// Ask the JCache API for implementationsCachingProvider cachingProvider = Caching.getCachingProvider(); // Build cache scope, multiple can exist CacheManager cacheManager = cachingProvider.getCacheManager();// Configure the new cache Configuration<Integer, String> configuration = new MutableConfiguration<Integer, String>() .setTypes(Integer.class, String.class); // Get the actual cache Cache<Integer, String> cache = cacheManager.getCache("name", Integer.class, String.class);

Demo Time

I told you:Easy Peasy!

Quick Shameless Plug :)Hazelcast!

Hazelcast in 5 Facts• Java Collections API• Java Concurrency API

• Transparent Data Distribution• Drop-In Replacement

• Disruptively Simple(c) Rod Johnson (@springrod)

Time to be Happy!

Apache License 2

Time to be Happy!

www.hazelcast.org

You can do it!

Thank You!Any Questions?

@noctarius2k http://www.sourceprojects.org

http://github.com/noctarius

@hazelcast http://www.hazelcast.com http://www.hazelcast.org

http://github.com/hazelcast

Thank You!Any Questions?

@noctarius2k http://www.sourceprojects.org

http://github.com/noctarius

@hazelcast http://www.hazelcast.com http://www.hazelcast.org

http://github.com/hazelcast

Free Hazelcast T-Shirthttp://bit.ly/tshirtcast

Gimme Caching - The JCache Way

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