Friday, October 19, 2012

JAVA Synchronized HashMap vs ConcurrentHashMap

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A synchronized HashMap is a Map returned by calling  synchronizedMap methods of java.util.Collections class. Map syncMap = Collections.sy...
Sunday, September 16, 2012

Hadoop 2.x Tutorial

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Hadoop 2.x release involves many changes to Hadoop and MapReduce. The centralized JobTracker service is replaced with a ResourceManager tha...
6 comments:
Friday, August 17, 2012

JAVA enum tutorial

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Java language has supported enum type for several releases. Yet, many programmers do not use it or do not fully understand all features of ...
2 comments:
Tuesday, July 17, 2012

Scaling The Relational Database

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Scalability of a web application is the ability to handle increased load whether it is requests or number of users or data without having t...
1 comment:
Tuesday, June 12, 2012

5 Tips for building low latency web applications

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Low latency applications are those that need to service requests in a few milliseconds or microseconds. Examples of a low latency applicati...
Wednesday, May 16, 2012

When to use explicit Locks in JAVA ?

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Prior to JDK 5, the only way to protect data from concurrent access was to use the synchronized keyword. The limitations of using synchroni...
Friday, April 20, 2012

Build distributed applications using Spring HTTP Invoker

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Buliding distributed applications involves calling methods on objects that are remote - on different machines and/or different JVMs. Code r...
2 comments: