Memcached is a high-performance, distributed memory object caching system. It is used in a wide range of sites such as livejournal.com and facebook.com as a way to alleviate database load helping to speed up sites. Memcached is usually deployed as an adequate subset of servers in relation to your application and database infrastructure. It’s a great way to cut down your database calls by caching the requests. (Read more…)
I find the Apache mod_status module to be very helpful in respect to Apache server performance/usage monitoring and debugging. However I have read books and posts stating a performance hit when the module is enabled particularly with “ExtendedStatus On”, so what’s the real deal? I never hear what the impact is, in a real world setting. (Read more…)
If your like me you like to know who is logging into your servers, hopefully this blog entry will help. So the scenerio goes someone has logged into your server through means not legal or ethical at 4 AM and wants to do who knows what. It would be great to get a email notification to your phone and wake up to take care of business. The script below should help:
If you have a scenerio when encryption is necessary for your data, a perl script utilizing the Crypt::Blowfish module to get the job done may be your answer. The code is pretty straight foward however it has an additional padding section which helps you negotiate data not matching your designated encryption key size. (Read more…)
