Let’s discuss this API in this post with a real-world example. Under certain circumstances, using this API can affect your application’s availability. But there is not reason not to believe that an implementation where the average time scales best will either has same or lower maximum time.
#Java uuid generator jug generator#
JUG library provides couple of generator viz TimeBasedGenerator & RandomBasedGenerator. Source ddieditor/trunk/lib-java/jug/3.1.0/.svn/entries, 386 ddieditor/trunk/lib-java/jug/3.1.0/.svn/text-base/java-uuid-generator-3.1.0.jar.svn-base, 36.95KB. Note 6: It's hard to measure the maximums, because to do so it is necessary to remove loop from test cases and then test infrastructure starts interfering more. Generate time based uuid in java using JUG (Java Uuid Generator) library. Note 5: .TimeBasedGenerator which is currently maintained implementation built on top of original safehaus implementation was also tested but showed the same characteristics under concurrent loads as it's predecessor. Note 4: was tested with MULE-7549 incorporated. Note 3: While was included for comparison, it does not generate a time-based alphanumerically ordered type 1 UUID like the other implementations do. Note 2: While I only tested up to 200 threads, Mule has use cases where it might be used on 32 core machines with 1000 threads. Note 1: Results are in microseconds and on JDK7 unless otherwise stated and tested using modified implmentations of .getUUID(). So I actually wrote 2 types for handling UUID, one mapping to CHAR the other to BINARY (there.
Testing multiple possible implementation with different currency levels gave these results: And, given event/message get copied numerous times during a typical Flow, whem Mule is running under load with moderate to high concurrency the UUID generation starts to cause thread contention quickly becoming a limiting factor to scaling while maintaining reasonable response times. Maven & Gradle Java UUID Generator Java UUID Generator (JUG) is a Java library for generating Universally Unique IDentifiers, UUIDs (see. Given we use UUID for message, event and session ID's as well as for object stores, transactions etc. Switch Safehaus JUG UUID implementation out for to reduce contention
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