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High Performance expectations

Posted by Vic_ on April 2, 2013 at 2:28am

Hi Guys

I am looking for a system where I can cluster MySQL. I saw an article which guided me to custom Drupal schema for NDBCluster engine for MySQL clustering, Btw. I am using Drupal 7 with Varnish, memcache etc.

And I also saw another solution for clustering MySQL using Galera Cluster

(MariaDB and Percona also uses this for Clustering) Scaling Drupal stack with Galera)

The reason why I need a cluster is because my fields are over 8 kilobytes There will be a minimum of 15.000 Users visiting the site at the same time.

Comparison of shared files directory solutions

Posted by greggles on April 2, 2013 at 3:44pm
Last updated by coredumperror on Tue, 2014-06-24 19:30

If you want to have multiple webservers for a Drupal site you need to keep your code and files directory in sync across all the webservers.

For synchronizing the code solutions like capistrano, drush deploy, fabric, phing are all good solutions. Sharing the code using a network file system doesn't usually perform well because the files are re-read (or at least stat'd) during page load which is slow.

Advice on best way to serve Audio Files (MP3 etc) - Linux Box

Posted by spessex on April 4, 2013 at 6:21pm

I just wanted to know if anyone had any advice or experience with using small/short audio files in their websites?

I'm intending on placing the odd audio clip into a survey to test advertising effectiveness. The audio clip will be short, around 30 seconds and the survey might be hit by a 1000 users over the period (with the possibility of up to 300 users accessing the survey - and the resulting audio file - at anyone time (depending on when they hit the server).

Should I still use entitycache in Drupal 7 projects?

Posted by tipit on April 5, 2013 at 1:39pm

I have been using entitycache [1] without problems in D7. However I have not really measured lately does it really improve the performance and is there some issues? And what is the state at the moment about entitycache going to core [2] in D7 or D8?

What I am asking is:

Should I use entitycache in projects of any kind? (Like using APC cache ALWAYS because it does not matter is there logged in users or not.)
Has anyone measured the impact lately? (If it is in core it does not really make sense using it, right?)

Very Slow Caching, Memory Spikes

Posted by Ony on April 7, 2013 at 6:50pm

Hello, it's me again. I've been trying to monitor my site for some days now and it occured to me to re-enable Devel to check out the speed of my queries. Turns out they're the problem. Some pages load faster than others, but for places like the forum, opening a link takes FOREVER, and it's not hard to see why, on one page below these were the longest running queries in the list. There way many more cache drags like the one below.

4755.013ms DrupalDatabaseCache::setP A SELECT 1 AS expression FROM cache_menu cache_menu WHERE ( (cid = :db_condition_placeholder_0) ) FOR UPDATE default

Anybody taken an O"Reilly course in sys admin?

Posted by RKopacz on April 8, 2013 at 7:30pm

Sorry if this isn't the right place (so many groups out there :)! ) but I was wondering if anyone ever took or could recommend this O"Reilly Media Course in Linux:

http://www.oreillyschool.com/certificates/sysadmin.php

I'm trying to get my sys admin chops, have some books, but thinking that maybe some structured resources would help.

Thanks and apologies if this is the wrong group; not sure where to ask this question.

Alpha Version of AdvAgg 7.x-2.x released

Posted by mikeytown2 on April 19, 2013 at 12:46am

The first alpha version of AdvAgg 7.x has been released.

Summary:
- Everything is working except for CDN's farfuture option.
- If using jQuery Update the advagg_css_cdn and advagg_js_cdn sub modules should be disabled.
- Uses httprl for aggregate building if module is installed.
- New sub module called advagg_mod; allows for tweaks to the css/js like put all JS in the footer.

High Volume Hosting Solutions

Posted by Codeblind on April 25, 2013 at 5:35pm

I maintain a news-oriented site which gets several tens of millions of page views per month. We've recently implemented an effort to include images in all of our articles. This is putting us over our bandwidth limit, which gets expensive very quickly. We are also having a minor dispute with the hosting company regarding the terms of these limits and the cost of purchasing more bandwidth in bulk.

I am recommending a CDN for hosting the images, or, failing that, another dedicated server to manage images and store backups and system monitoring data.

Anyone tried OpenShift by Redhat for hosting?

Posted by giorgio79 on May 7, 2013 at 8:59am

Hello,

Been looking at https://www.openshift.com/developers/pricing#faq-what-are-scaling-threshold

Looks impressive to me especially the autoscaling part. Any experiences?

Use Tagged Cache Invalidation instead of purging specific URLs in Varnish

Posted by Mark Theunissen on May 8, 2013 at 11:12pm

I stumbled across this article which describes a useful technique for doing cache invalidation. This could work nicely and have many advantages over calculating the list of URLs to invalidate on the Drupal side, as the current combination of Varnish+Expire modules does. We could hook into entity CRUD functions and add headers to the response.

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