Java HashMap Performance | Martin Klewitz

Java HashMap Performance | Martin Klewitz

Recently I was wondering if there are alternatives to the Java Collections Implementations and if they have a better performance than the java.util package. Especially the performance of HashMaps was of interest. At the company I work at we have keep lots of business data entries in memory and those entries are stored in HashMaps. In several Articles I read that other implementaions are faster than java.util.HashMap. So I was conducting a performance check. Alternatives           net.sf.trove4j         trove4j         3.0.3                 com.google.guava         guava         15.0               commons-collections       commons-collections       3.2.

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