Gimme Caching - The JCache Way
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Reaching critical masses with your application systems becomes harder every day. Caching helps to provide low latency and high availability over slow calculation, networks, databases and any other kind of external resource.
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Gimme Caching - The JCache Way
- 1. www.hazelcast.com@noctarius2k /** * Gimme Caching * The JCache Way */
- 4. www.hazelcast.com@noctarius2k 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.
- 5. www.hazelcast.com@noctarius2k Who’s that dude? • Chris(toph) Engelbert • Twitter fanatic: @noctarius2k • Weird 9+ Java-Years • Performance, GC, Fairytales • Apache Committer • Gaming, Travel Management, …
- 6. www.hazelcast.com@noctarius2k • 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?
- 7. www.hazelcast.com@noctarius2k … What is Caching?OOO ( )
- 9. www.hazelcast.com@noctarius2k …access fast when necessary!…access fast when necessary!
- 11. www.hazelcast.com@noctarius2k ‘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
- 12. www.hazelcast.com@noctarius2k Evolution of: - Memory-Price - Memory-Size
- 14. www.hazelcast.com@noctarius2k http://gadizmo.com/roll-your-own-with-the-ham-dogger.php Roll Your Own! Caches Are Simple
- 15. www.hazelcast.com@noctarius2k 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); } }
- 19. www.hazelcast.com@noctarius2k What Is Wrong? O(n) 5 mio Entries
- 20. www.hazelcast.com@noctarius2k It was a trap!
- 26. www.hazelcast.com@noctarius2k A Java Caching Standard!
- 27. www.hazelcast.com@noctarius2k No need to ## care about Proprietary Solutions anymore!
- 35. www.hazelcast.com@noctarius2k JCache Impementations Hazelcast Coherence Apache Ignite Ehcache Infinispan
- 36. www.hazelcast.com@noctarius2k JCache Impementations Hazelcast Coherence InfinispanApache Ignite How Dare You Are To Call You JCache? Ehcache
- 39. www.hazelcast.com@noctarius2k // Ask the JCache API for implementations CachingProvider cachingProvider = Caching.getCachingProvider(); Demo Time
- 40. www.hazelcast.com@noctarius2k // Ask the JCache API for implementations CachingProvider cachingProvider = Caching.getCachingProvider(); Demo Time Caching.getCachingProvider(myClassLoader); Caching.getCachingProvider("c.h.c.CachingProvider");
- 41. www.hazelcast.com@noctarius2k // Ask the JCache API for implementations CachingProvider cachingProvider = Caching.getCachingProvider(); Demo Time Caching.getCachingProvider(myClassLoader); Caching.getCachingProvider("c.h.c.CachingProvider");
- 42. www.hazelcast.com@noctarius2k // Ask the JCache API for implementations CachingProvider cachingProvider = Caching.getCachingProvider(); // Build cache scope, multiple can exist CacheManager cacheManager = cachingProvider.getCacheManager(); Demo Time
- 43. www.hazelcast.com@noctarius2k // Ask the JCache API for implementations CachingProvider cachingProvider = Caching.getCachingProvider(); // Build cache scope, multiple can exist CacheManager cacheManager = cachingProvider.getCacheManager(); Demo Time cachingProvider.getCacheManager(myURI, myClassLoader)
- 44. www.hazelcast.com@noctarius2k // Ask the JCache API for implementations CachingProvider 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
- 45. www.hazelcast.com@noctarius2k // Ask the JCache API for implementations CachingProvider 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
- 46. www.hazelcast.com@noctarius2k // Ask the JCache API for implementations CachingProvider 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
- 47. www.hazelcast.com@noctarius2k // 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
- 52. www.hazelcast.com@noctarius2k // Ask the JCache API for implementations CachingProvider 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
- 54. www.hazelcast.com@noctarius2k Quick Shameless Plug :) Hazelcast!
- 55. www.hazelcast.com@noctarius2k Hazelcast in 5 Facts • Java Collections API • Java Concurrency API • Transparent Data Distribution • Drop-In Replacement • Disruptively Simple (c) Rod Johnson (@springrod)
- 56. www.hazelcast.com@noctarius2k Time to be Happy!
- 57. www.hazelcast.com@noctarius2k Time to be Happy! Apache License 2
- 58. www.hazelcast.com@noctarius2k Time to be Happy! www.hazelcast.org