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Memcached: a distributed memory object caching system

Memcached: a distributed memory object caching system
What is Memcached? Free & open source, high-performance, distributed memory object caching system , generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load. Memcached is an in-memory key-value store for small chunks of arbitrary data (strings, objects) from results of database calls, API calls, or page rendering. Memcached is simple yet powerful . Its simple design promotes quick deployment, ease of development, and solves many problems facing large data caches. Its API is available for most popular languages.

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Networking HP PPA DeskJet Printers using SAMBA.: Emulating a Pos Next PreviousContents 4. Emulating a PostScript printer on a Windows Host. If you do not have commercial PostScript emulation software for Windows that will work with your HP PPA DeskJet (the author is unaware of any such software that supports PPA printers), you can use Ghostscript together with HP's native Windows drivers.

BizTalk Caching Pattern UPDATED: 24th August 2007, to reflect Richard Seroter's comment There is no necessity to explain the importance of caching in any server based developments like BizTalk, ASP .NET etc. You need to plan early in your development cycle to cache resources in order to make most out of your limited server resources. spymemcached A simple, asynchronous, single-threaded memcached client written in java. Efficient storage of objects. General serializable objects are stored in their serialized form and optionally compressed if they meet criteria. Certain native objects are stored as tightly as possible (for example, a Date object generally consumes six bytes, and a Long can be anywhere from zero to eight bytes). Resilient to server and network outages. In many cases, a client operation can be replayed against a server if it goes away and comes back.

ESX How To VMware ESX 2.1/5 Server: Beyond the Manual Document Version 1.6 By Mike Laverick © RTFM Education Algorithms 101 - How to eliminate redundant cache misses in a distributed cache I'm going to jump right in to a fairly complex subject, for background check out my recent Distributed Cache Webcast here: Online Training. In the Webcast, I wrote a simple caching service that fronts a simple "GetService" method. I define "GetService" as some service that, for a given key, can retrieve a given value. Pretty basic stuff, if you have ever implemented a SQL query, a Web Service client, or something similar, you can probably envision the implementation.

A Bunch of Great Strategies for Using Memcached and MySQL Better The primero recommendation for speeding up a website is almost always to add cache and more cache. And after that add a little more cache just in case. Memcached is almost always given as the recommended cache to use. What we don't often hear is how to effectively use a cache in our own products. MySQL hosted two excellent webinars (referenced below) on the subject of how to deploy and use memcached. AdditionalResources/Repositories/CentOSPlus 1. What is the CentOSPlus repository? The CentOSPlus repository contains packages that are upgrades to the packages in the CentOS base + CentOS updates repositories. These packages are not part of the upstream distribution and extend CentOS's functionality at the expense of upstream compatibility. Enabling this repository makes CentOS different from upstream. You should understand the implications of this prior to enabling CentOSPlus.

memcached Basics for Rails Many speedy sites use memcached to save the results of expensive database queries and intense rendered templates. This is a basic introduction to using memcached with Rails. Thanks to Eric Hodel and Layton Wedgeworth who have answered many questions. Yes, there is a hash in the sky Memcached is a lightweight server process that stakes out a fixed amount of memory and makes it available as a quick access object cache. Some of the things you can do with it are: A peek at memcached's implementation I am a huge fan of memcached and we use it a lot on Plurk . Why to like memcached: it's a very simple protocol and supported for a lot of languages it's used by web-giants ( Facebook has now 25 terabytes of memcached cache ) it performs really well Metadata Performance Exploration Part 2: XFS, JFS, ReiserFS, ext More performance: We add five file systems to our previous benchmark results to creating a "uber" article on metadata file system performance. We follow the "good" benchmarking guidelines presented in a previous article and examine the good, the bad and the interesting. Last week we tested four Linux file systems — ext3, ext4, nilfs2, and btrfs — for metadata performance using a benchmark called fdtree. The point of the benchmarks was not really to comparison the performance of the file systems per say, although comparisons are inevitable.

Big Dave’s Blog » Blog Archive » Ruby Background Tasks with Starling - Part 3 In my previous post, I went over the changes I made to Workling to add threading and allow it to run for long periods. Now, we need to deploy and monitor everything. In the Linux word, there are several options, but monit seems to be the most popular. However, I wanted to give god.rb a shot. God.rb is basically a clone of monit written in Ruby.

In-Memory Caching: Why We Can't Just Trust the Database to I remember taking an operating systems class in college and marveling at the fact that operating system design seemed less about elegant engineering and more about [what I viewed at the time as] performance hacks. I saw a similar sentiment recently captured by Eric Florenzano in his post It's Caches All the Way Down where he starts describing how a computer works to a friend and ends up talking about the various layers of caching from CPU registers to L2 caches to RAM and so on. At the end of his post Eric Florenzano asks the following question I've often heard at work and in developer forums like programming.reddit

CentOS 5 and the XFS kernel module CentOS 5 and the XFS kernel module Posted on 06-13-2007 02:22:00 UTC | Updated on 06-13-2007 02:22:00 UTCSection: /software/xfsfilesystem/ | Permanent Link If your installing CentOS 5 and you need the XFS filesystem then you need to install a special kernel module from the extras repository. If your going to use XFS filesystem you should also install the XFS programs that go with it.