Created
April 17, 2012 13:58
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Testing Jedis (Java Redis API) for parallel requests
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| // https://github.com/xetorthio/jedis | |
| import redis.clients.jedis.Jedis; | |
| import java.util.ArrayList; | |
| import java.util.List; | |
| import java.util.concurrent.ExecutionException; | |
| import java.util.concurrent.ExecutorService; | |
| import java.util.concurrent.Executors; | |
| import java.util.concurrent.Future; | |
| import java.util.concurrent.atomic.AtomicInteger; | |
| public class TestJedis { | |
| public static void main(String[] args) throws ExecutionException, InterruptedException { | |
| testSequential(); | |
| testParallel(); | |
| } | |
| public static void testSequential() throws InterruptedException { | |
| final Jedis jedis = new Jedis("127.0.0.1", 6379); | |
| jedis.set("abc", Long.toString(0)); | |
| for (int i = 0; i < 500; i++) { | |
| jedis.incrBy("abc", i); | |
| } | |
| System.out.println("Done: " + jedis.get("abc")); | |
| } | |
| /** | |
| * Exception in thread "main" java.util.concurrent.ExecutionException: redis.clients.jedis.exceptions.JedisConnectionException: It seems like server has closed the connection. | |
| */ | |
| public static void testParallel() throws ExecutionException, InterruptedException { | |
| final Jedis jedis = new Jedis("127.0.0.1", 6379); | |
| jedis.set("abc", "0"); | |
| ExecutorService executorService = Executors.newFixedThreadPool(500); | |
| List<Future<Runnable>> futureList = new ArrayList<Future<Runnable>>(); | |
| for (final AtomicInteger i = new AtomicInteger(); i.get() < 500; i.getAndIncrement()) { | |
| Future future = executorService.submit(new Runnable() { | |
| @Override | |
| public void run() { | |
| jedis.incrBy("abc", i.get()); | |
| System.out.println("Incremented by " + Integer.toString(i.get())); | |
| } | |
| }); | |
| futureList.add(future); | |
| } | |
| for (Future<Runnable> future : futureList) { | |
| future.get(); | |
| } | |
| System.out.println("Done: " + jedis.get("abc")); | |
| } | |
| //jedis.quit(); | |
| } |
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