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LMAX Exchange Staff Blogs

Adrian Sutton

Adrian Sutton

Once an application goes live, it is absolutely essential that any future changes are able to be work with the existing data in production, typically by migrating it as changes are required. That existing data and the migrations applied to it are often the riskiest and least tested functions in the system. Mistakes in a migration […]

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Observing JVM warm-up effects

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Mark Price

In this post, we will explore some of the various flags that can affect the operation of the JVM’s JIT compiler.
Anything demonstrated in this post should come with a public health warning – these options are explored for reference only, and modifying them without being able to observe and reason about their effects should be avoided.
You have been warned.

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Zimbra Issues

Andy Phillips

Andy Phillips

We recently upgraded to Zimbra 8.6 from 8.0.7. We hit a problem that not even zimbra support was able to figure out. Perhaps its that our Zimbra instance has been upgraded since version 3 (or 4) but it got into a bad state whenever we tried to update …

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Qcon London Talks

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Mark Price

LMAX Exchange developers are giving two talks at QCon London this year.Sam Adams, our Head of Software, will be discussing the awesome LMAX Continuous Delivery process in his talk “CD at LMAX: Testing into production and back again”.I will be talking a…

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