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"How loadbalancers kill deadlines"

Date:June 27th, 2014
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Yep. Today we couldn’t work. All the team. And nobody knew why… Our “near perfect and ready to go” server farm just seemed to be dad…

Imagine: you try to call some page pf you j2ee webapp and see nothing. You search for two hours what you did wrong, thenmany people find that they all somehow did something wrong(also those who where absent).

You analyse local software, deployed software, last relese.

You contact IT and the respond you that all is ok. And other teams do respond the same. All is ok. The only thing is that team of 20+ experienced web developers can only seat and hope that their carma brings the luck to the browser/server communication:)

After sometime somebody can pinpoint the source of the problem… Locall calls do work fine. Go through the proxy or internet- nothing works or responces make no sence whatsoever. Session gets lost if it was mapped to particulat server inside the cluster as well…

Then some really genius developer/lead sees the light at the end of the tunnel. The only thing which stands between the good server responces and complete noncence is the loadbalancer.

And here it is, IT or administrator checks the server and it doesn’t work quite right.

End of the day, nothing done, but we still fee like winners.

What do we learn today? Think outside the box;)

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