China solar cell makers seek Taiwan partnerships http://t.co/p5Hh7kJD
18 minutes ago by Export2China on twitterZDNet / Techguide / Open Source
Cache PHP scripts with APC module
Summary
Learn how to boost your server performance by using APC to cache PHP scripts.
Events
Echelon 2012
June 11 and 12, 2012
University Cultural Centre, National University of Singapore
Startup Asia Jakarta 2012
June 7 and 8, 2012
12th Floor, Annex Building, Wisma Nusantara Complex, Jl. M.H. Thamrin No. 59 Jakarta 10350, Indonesia
MMA Forum Singapore
April 23-25, 2012
Grand Hyatt Singapore
Looking to get every ounce of performance from your Web
server? If you're using PHP scripts, you can easily accomplish this using PHP's
APC module, which caches php opcode instead of forcing php to reinterpret every
script every time it is executed. On a PHP5 system with PEAR support,
installation of APC is as easy as executing, as root:
# pecl install APC
Some distributions likely provide binary packages of APC, so you may be able to install it using urpmi php-apc or apt-get install php-apc.
Once APC is installed, edit /etc/php.ini to add the following:
extension=apc.so
[apc]
apc.enabled = 1
apc.shm_segments = 1
apc.shm_size = 30
apc.optimization = 0
apc.ttl = 7200
apc.user_ttl = 7200
apc.num_files_hint = 1000
apc.mmap_file_mask = /tmp/apc.XXXXXX
What this does is enable APC caching, but not the (currently experimental) optimizer. The important options to note, besides enabling APC, are the apc.ttl and apc.user_ttl options, which define the time for a script to remain in the cache, in seconds. This is really important for a server that serves a lot of files; this will prevent the cache from filling up with stale entries that could prevent newer entries from being cached. You could also tweak the apc.num_files_hint, which gives APC an approximation of the number of distinct PHP source files that will be requested or included on your system. The default here is 1000, but if you know you serve many more files than that, increase the number to a best-guess estimate. Likewise, if you have a lot less files than that, reduce the number accordingly.
Finally, in the source package for APC is a script called apc.php, which can be used to obtain detailed statistics from the APC cache to allow you to further tweak the APC settings. You will need to edit the script and change the ADMIN_PASSWORD option in order to use it. By tweaking the options and using this script to determine how well your changes are taking, you can really give your PHP scripts a nice performance boost.
Resource Centre Useful content from our premier sponsors
Open Source TechGuides
How to make backup files that never exceed a predefined size
Why and how to migrate mailboxes to IMAP and Maildir
iperf: Simple but powerful tool for troubleshooting networks
KDE 4.8 minor tweaks, major improvement
8 ways to use e-mail header info and how to extract it
How to automatically insert photographs in LaTeX files
Use kismon to view kismet log files
Command line calendars and some little known uses for them
Linux design needs to be out of the hands of developers
How to use shell functions to fetch information online
ZDNet Asia Live
Big data acquisitions pave way to fast, effective innovation http://t.co/hdiEfBsz via @zdnetasia
18 minutes ago by jowoodley on twitter
Integration, focused investments to propel Windows Phone: By Kevin Kwang , ZDNet Asia on May 23, 2012 (2 hours a... http://t.co/E7tsZbHJ
1 hour ago by Easyforexdotcom on twitter
Integration, focused investments to propel Windows Phone http://t.co/u9TqjQ8C
1 hour ago by ashvin_9 on twitter
AsiaClassifiedToday. Integration, focused investments to propel Windows Phone - ZDNet Asia: S... http://t.co/47tdjZyG #asia #google #biz
2 hours ago by ChemarieMonica on twitter
Malaysian organizations are apathetic about information security and fail to realize they are potentially under... http://t.co/XeuvbXrs
3 hours ago by SalesInAsia on twitter
Big data acquisitions pave way to fast, effective innovation - ZDNet Asia News http://t.co/vDZpl0lu
5 hours ago by servicemarq on twitter
"Big data acquisitions pave way to fast, effective innovation" including @Vivisimo_Inc (client) in @ZDnetAsia http://t.co/yNSdPqbb
5 hours ago by FreestylePR on twitter
Homegrown smartphone OSes gaining favor in China: 59 Jakarta 10350, Indonesia Locally-made mobile operating syst... http://t.co/BruP98Es
6 hours ago by SmartPhoneHonch on twitter
RT @MDMGeek: Big data acquisitions pave way to fast, effective innovation - ZDNet Asia http://t.co/ky8YgPAn #Bigdata #analytics via @ciropuglisi
6 hours ago by data_nerd on twitter
Integration, focused investments to propel Windows Phone http://t.co/6JkDa9sB
6 hours ago by bestwaytoinvest on twitter
RT @AsianFashionLaw: Malaysia offers some manufacturing benefits over China http://t.co/bMquIFiX
6 hours ago by Serend1p1ty9 on twitter
Acquisitions in the Big Data market increasingly important to enterprises… http://t.co/Br4BkXyZ
6 hours ago by iProConLtd on twitter
Experience trumps content in apps monetization http://t.co/iaCY5ebX
6 hours ago by monetize_me on twitterSo much as we know , MTK6575 extremely integrated frequency1GHz ARM Cortex-A9 processor, the superiority of 3G / HSPA Modem, and help the...
1 day ago by y15822137359 on 5 SaaS adoption speed bumps to avoidI reckon your view: "CRM is strategy, not software", if a company replicating the approach uses in ERP implementation into CRM, what they...
2 days ago by wykoong on Gartner: Mobile CRM gives better ROI than socialThis video will teach you about the Excel fill handle but also provide you with a workook to download... http://www.youtube.com/watch?v=...
3 days ago by TradeBrother on A quick fill handle trick for Microsoft Excelwaiting...
5 days ago by eapete on What should count in a company's market value?Boy, you've opened a can of worms now.
Wait for the rants & raves.
I was puzzling before this whether to replicate the success formula we executed for a financial institute, and come out with a standard s...
5 days ago by wykoong on Drop the egos, copy ideas, then innovateKeep up with ZDNet Asia
Facebook 
RSS Feeds 
Newsletters 
Twitter Whitepapers
Understanding Awareness in Mixed Presence Collaboration
A Taxonomy of Cross Layer Routing Metrics for Wireless Mesh Networks
SUSE Linux Enterprise Server on the IBM PureFlex System
Businesses are ready for a new approach to IT
The Value Proposition for IBM PureFlex System: Case for IBM PureFlex System for Cloud-Enabled SAP Enterprise Environments
Downloads
Open Source News
Inside ZDNet Asia
Sponsored
Threats and malware know no boundaries. Neither should your web security. See how far Blue Coat Unified Web Security goes to protect your network.
Echelon 2012 - The Awesomer Tech Event in Asia
Echelon 2012 – SEA’s longest running tech startup event goes Awesomer. Catch 50 of Asia’s most promising startups & over 40 international speakers on June 11-12.
Startup Asia Jakarta showcases new product-ready tech startups. Plus: hackathon, exhibition, and speakers. Use promo code CBSi50 for 50% discount.
ZDNet Asia Intelligent Singapore video series
Featuring inteviews with CXOs who define "intelligence" in their markets and reveal how their companies drive business efficiencies through ICT.
