Tuesday, November 27, 2012

Runtime vs. memory usage

Oftentimes, better runtime can result in higher memory usage. Here is an example to create some strings to test bulk inserts on Redis:

Tuesday, November 20, 2012

Developers's time of permanency is 15 years?

This article is not about performance of PHP, but more about performance of developers in general.
A nice article from golem.de claims that the developers's time of permanency is - exactly - 15 years.

Tuesday, November 6, 2012

Applying Scrum to legacy code and maintenance tasks

There are some problems with Scrum that mainly occur when dealing with third party components or legacy systems:
  • wrong estimations (time, impact, risk, complexity)
  • bad requirements (inconsistent, incomplete, testable, conflicting, faulty)
  • development involved in operations (bug analysis, data correction, deployment, hot-fixes)
  • delays in development (bugs in legacy system, missing documentation)
  • testing (quality/quantity of test cases, un-mockable interfaces, long running offline processes, performance issues, live and test system differ)

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