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.. index::
   single: Faster; Fast-start option
   single: Faster; Reusable cluster member group

Making tests faster

Coherence is pretty fast at starting up and shutting down when you compare it to other software like a database or middleware, such as an application server - however, whilst it is fast and littlegrid helps start up an entire small cluster quickly, it gets a bit tedious if you want to practice Test Driven Development (TDD) or have lots of automated integration tests that you run locally or on your :ref:`continuous-integration` server.


Ways of making your tests start faster, how to avoid the repeated start-up and shutdown cluster time when running lots of test classes or a suite of tests and how to run tests in parallel.


Faster test start-up and faster execution of all your tests makes practicing TDD and CI easier and nicer - besides, no-one likes waiting if there is a faster way!


littlegrid has a number of ways of making things faster, these are: