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  • Articles | 2bits.com, Inc. - Drupal Performance Tuning and Optimization, Managed Hosting and Consulting
    for a client came up recently They are using xmlsitemap like many sites do Contents Articles Read more about XML Sitemap 6 x 2 x How Drupal modules can overload a site during cron with solutions 3 comments Add new comment Previous Next API a high performance API module for previous next node Many sites need a way to browse content by previous and next links For example a photo gallery site would have the visitor view one image and then offers links or thumbnails with links to the previous node or the next node This navigational aid engages the user more and avoids the pitfalls of them getting lost by a less than obvious multi level navigation scheme There are several common ways for doing this on the fly via SQL as in the following articles Contents Articles Read more about Previous Next API a high performance API module for previous next node 8 comments Add new comment Scalability of the Taxonomy Browser module Restricting number of terms Two very large sites that we manage for clients experienced several instances of outages recently On the first site the symptom was a long running query and many other queries locked as a result Upon digging deeper we found out that this was caused by the taxonomy browser module This is a useful module for drilling down into a site s category structure for nodes that match certain criteria Contents Articles Read more about Scalability of the Taxonomy Browser module Restricting number of terms 2 comments Add new comment The 80 20 rule for Drupal web site optimization little actions and big impacts Most of us have heard about the 80 20 rule a k a The Pareto Principle Simply put 80 of something have just 20 of the reasons In other words if you address the 20 of the causes 80 of the symptoms will go away because of that Contents Articles Read more about The 80 20 rule for Drupal web site optimization little actions and big impacts 6 comments Add new comment Benchmarking Zend Server Community Edition with Drupal Zend have had their own proprietary PHP server product for quite some time now This week they announced their Zend Server Community Edition with the intention to disrupt Java and grow PHP specially in the current economic conditions Contents Articles Read more about Benchmarking Zend Server Community Edition with Drupal 13 comments Add new comment Microsoft WebDAV MiniRedir Drupal singlesignon An aggressive crawler When tuning sites for clients we often see the usual symptoms and causes of why a site is slow and occasionally we find an unusual reason For one client after we diagnosed the main reason for a site being slow bottleneck between database server and web server they continued to experience slowdowns This was getting annoying as it happened several times a day and their customers were complaining about the slowdown on a daily basis Contents Articles Read more about Microsoft WebDAV MiniRedir Drupal singlesignon An

    Original URL path: http://2bits.com/contents/articles?page=6 (2016-05-02)
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  • Articles | 2bits.com, Inc. - Drupal Performance Tuning and Optimization, Managed Hosting and Consulting
    at the Waterloo Region Drupal Users Group We have announced this integration a few weeks ago The slides from the presentation are attached below Contents Articles Read more about Presentation Monitoring Drupal using Nagios Integration 1 comment Add new comment Presentation Diagnosing and Speeding up a Slow Drupal Site A Case Study Thanks to all of those who braved the cold snap and showed up for the Drupal Users Group monthly meeting for January 2009 This was a case study on a site that was forced to move from a shared host to a VPS yet was still slow and how we diagnosed the problem and found a solution for it Here are the slides for the talk in PDF format Contents Articles Read more about Presentation Diagnosing and Speeding up a Slow Drupal Site A Case Study 8 comments Add new comment Making Subversion SVN recognize CVS Id and Revision tags Many Drupal developers use Subversion SVN internally within their organization due to its many benefits over what the Drupal project s repository uses the dated CVS One annoying aspect though is that almost all Drupal files use CVS style tags such as the Id one Subversion does not recognize these by default Contents Articles Read more about Making Subversion SVN recognize CVS Id and Revision tags 5 comments Add new comment How to delay somewhat heavy operations to improve user experience We had a need from a client where they wanted to check certain complex conditions from a relatively big decision matrix Without going into specifics they wanted to check a progressive set of rules for users and taking certain actions when all the conditions were met Checking one or two conditions is not a problem on a modern day web site but because the rules are progressive and have to be all checked from the start every time that involves a lot of processing a lot of database queries and basically a lot of time Contents Articles Read more about How to delay somewhat heavy operations to improve user experience Add new comment The importance of tuning APC for sites with a high number of Drupal modules As we observed before configuring APC with low memory can be a drag on performance causing high executing times We saw this recently for a client with a large web site on a dedicated server that approached 2bits com for performance tuning Contents Articles Read more about The importance of tuning APC for sites with a high number of Drupal modules 6 comments Add new comment How to reduce page load times by sending emails via cron rather on page submission A frequent problem we see at client sites is when they click submit on a page whether it is a creation of a node or a comment and then the site does not come back for several minutes Contents Articles Read more about How to reduce page load times by sending emails via cron rather on page submission 3

    Original URL path: http://2bits.com/contents/articles?page=7 (2016-05-02)
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  • Articles | 2bits.com, Inc. - Drupal Performance Tuning and Optimization, Managed Hosting and Consulting
    to measure the most resource hungry pages Contents Articles Read more about Performance Logging and Monitoring A module to log and monitor performance statistics for Drupal 4 comments Add new comment Free your content of PHP Moving PHP code out of blocks views and nodes From the early days Drupal had the ability to embed PHP code in its content This provides flexibility and functionality most importantly nodes and blocks can contain dynamically fetched data from the database using custom queries and displayed them in other content This is an easy approach to get such data without writing a module All you need to do is assign the PHP input format filter to the node or block and paste your PHP code in it and voila you have dynamic content Contents Articles Read more about Free your content of PHP Moving PHP code out of blocks views and nodes 11 comments Add new comment Installing a dedicated server or a VPS with Ubuntu Server 8 04 LTS Hardy Heron for Drupal 6 x Besides its success on the desktop Ubuntu has become a popular server distribution as well With the release of Hardy Heron 8 04 Canonical is making this release a Long Term Support LTS version with 5 years support on servers Contents Articles Read more about Installing a dedicated server or a VPS with Ubuntu Server 8 04 LTS Hardy Heron for Drupal 6 x 14 comments Add new comment Presentation DrupalCamp Toronto 2008 Drupal Performance Optimization for Large web sites On Friday and Saturday May 23 and 24 2008 both Khalid and Wafaa attended DrupalCamp Toronto In addition to the Drupal for Fun and Profit talk Khalid presented the Drupal Performance Optimization for large web sites The slides from the presentation are attached Contents Articles Read more about Presentation DrupalCamp Toronto 2008 Drupal Performance Optimization for Large web sites 4 comments Add new comment Benchmarking strings overrides vs locale module Drupal is distributed in English by default Translations into other languages require downloading the translation enabling the locale module and importing the translation s po file Another use for the locale module is when the Drupal terminology is not suitable for the site s audience and the site owner wants to replace end user facing text with custom versions of that In this case they create a locale and change the strings they want Contents Articles Read more about Benchmarking strings overrides vs locale module 3 comments Add new comment Configuring Drupal with multiple bins for memcached In a recent article we explained how to build memcached from source and PHP memcache using PECL on Ubuntu Gutsy 7 10 This article is a followup on how to configure memcache for Drupal and how multiple bins help with performance Each bin in memcached correspond to one or more cache table in Drupal To do this we first setup a start script for memcache that would start each bin with the correct size This would go into usr local

    Original URL path: http://2bits.com/contents/articles?page=8 (2016-05-02)
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  • Articles | 2bits.com, Inc. - Drupal Performance Tuning and Optimization, Managed Hosting and Consulting
    7 regions feature Today I am going to describe two easy ways of displaying ads on your site one that does not require any coding and another that requires a little bit of that but does use the new built in blocks of the adsense module Contents Articles Read more about Various Ways To Display Adsense Ads on Drupal 4 7 Add new comment Drupal Modules Too Much Of A Good Thing One of Drupal s best features is the ever growing number of contributed modules written for it These modules do so many clever things ranging from stock quotes to talk like a pirate This plethora of modules is definitely a blessing but can also be a curse Clients often ask us to install a gazillion modules and we try to explain for them the realities As for modules my advice in general is not to go overboard with modules Here is why we recommend against new Drupal users installing too many modules Contents Articles Read more about Drupal Modules Too Much Of A Good Thing 1 comment Add new comment Upgrading From Old pre 4 6 Drupal Releases To 4 7 Some Drupal site owners for various reasons do not stay up to date on Drupal releases As release after release come out they lag more and more behind Old releases not only lack new functionality but can have security issues that can be exploited by hackers Site owners who lag behind are faced with a formidable task The reason is that 4 7 only has support for upgrading from 4 6 only but not older releases Of course there is always a way to do this The following article is based on recent work we did for a a client who asked me to upgrade his old 4 3 1 install from end of 2003 Contents Articles Read more about Upgrading From Old pre 4 6 Drupal Releases To 4 7 Add new comment Using Cron As An SSH Alternative For someone used to the command line using SSH is the easiest and fastest way to get things done for a client This includes dumping a database loading a database from a dump moving files creating an archive etc The need for SSH At 2bits we always insist that a client has SSH enabled before we do any work In reality some on shared hosting cannot get it because their hosting company do not have it for their plan or for other reasons This leaves us in a frustrating situation sometimes and we have to find alternatives to do certain things Contents Articles Read more about Using Cron As An SSH Alternative Add new comment Google Adsense module gets new features Submitted by Khalid on Sun 2006 06 25 00 39 We are pleased to announce that we have committed a new version of the Drupal Adsense module to the contributed modules repository at Drupal org The release has some new features including Added five pre defined

    Original URL path: http://2bits.com/contents/articles?page=17 (2016-05-02)
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  • Beware of Drupal modules that disable the page cache | 2bits.com, Inc. - Drupal Performance Tuning and Optimization, Managed Hosting and Consulting
    free alternative to Mollom We ve been pleasantly surprised as we ve had it in place for over 6 months and have had zero complaints of spam from form recipients and also zero complaints of legitimate form submissions being blocked Pablo reply BOTCHA also disables page Submitted by dddave not verified on Thu 2013 02 21 02 47 BOTCHA also disables page cache reply Thank you for the solution to Submitted by Rodney Talley not verified on Tue 2013 11 19 08 10 Thank you for the solution to my problem I was in fact looking for this I was unable to find code when cache is gone reply perect Submitted by Rind not verified on Mon 2014 02 17 19 08 I checked the codes Recommended way of disabling the cache in Drupal 7 x drupal page is cacheable FALSE they are working perfect reply I can t able to enable in cache and block cache on my website Submitted by Muthuraman S not verified on Sun 2016 04 24 04 14 Hi all Thanks everyone for sharing the knowledge on this topic It really helpful Currently I am facing the issue on my website where I cant enable in cache and block cache on performance tab in Drupal 7 I have verified the setting php and contrib and custom modules as well How to check where its enable via SESSION stuff Can someone guide me to resolve this issue Thanks Muthu reply Is your Drupal or WordPress site slow Is it suffering from server resources shortages Is it experiencing outages Contact us for Drupal and WordPress Performance Optimization and Tuning Consulting Contents Services Clients Testimonials News FAQ Payments Site Map Navigation Payment Recent content Do you use any of our Drupal modules Did you find our Drupal WordPress and LAMP performance articles informative Follow us on Twitter 2bits for tips and tricks on Drupal and WordPress Performance Contact us for Drupal and WordPress Performance Optimization and Tuning Consulting In Depth Articles Client Testimonials Developing tracing and debugging Drupal Drupal Performance Tuning and Optimization for large web sites PHP op code caches accelerators Drupal large site case study Abuse Drupal Best Practices at your own peril Poor Performance Admin Menu module Popular yet occasionally problematic Another botnet spamming Drupal web sites causing performance issues Apache 2 and PHP5 on Ubuntu Feisty bloated Apache with fcgid acceptable performance and better resource utilization Avoid excessive disk writes by avoiding PHP errors in your code Benchmarking APC vs eAccelerator using Drupal Benchmarking Drupal 5 x vs 6 x which one is faster Benchmarking Drupal from the shell command line Benchmarking Drupal with PHP op code caches APC eAccelerator and XCache compared Benchmarking PostgreSQL vs MySQL performance using Drupal 5 x Benchmarking Zend Server Community Edition with Drupal Benchmarking strings overrides vs locale module Beware of Drupal modules that disable the page cache Beware when Drupal Pressflow displays messages for anonymous users Botnet hammering web site causing outages Bottleneck Replacing taxonomy term count

    Original URL path: http://2bits.com/comment/2147 (2016-05-02)
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  • Common Issues and Solutions for Dealing with Cloud Computing and VPS performance issues for Drupal | 2bits.com, Inc. - Drupal Performance Tuning and Optimization, Managed Hosting and Consulting
    en 0 42 cache get SELECT data created headers expire FROM cache WHERE cid bc 87 redacted 0 36 cache get SELECT data created headers expire FROM cache WHERE cid bc 54 redacted 0 19 cache get SELECT data created headers expire FROM cache WHERE cid filter 3 0b81537031336685af6f2b0e3a0624b0 0 18 cache get SELECT data created headers expire FROM cache WHERE cid bc 88 redacted 0 18 block list SELECT FROM blocks WHERE theme redacted AND status 1 ORDER BY region weight module Then suddenly same site same server and you get Executed 55 queries in 2237 67 milliseconds Page execution time was 2323 59 ms This was a Virtuozzo host and it was a sign of disk contention Since this is a virtual server we could not tell if this is something inside the virutal host or some other tenant on the same physical server flushing the toilet The solution is in the following point Move your VPS to another physical server When you encounter variable performance or poor performance before wasting time on troubleshooting that may not lead anywhere it is worthwhile to contact your host and ask for your VPS to be moved to a different physical server Doing so most likely will solve the issue since you effectively have a different set of housemates Further Reading Drupal on Dedicated vs Amazon AWS EC2 and how we halved the cost of Amazon by going dedicated Hosting Virtualization Virtuozzo OpenVZ vs Xen which is best has real life issues from sites we ve helped When Boost slows down your Drupal site discusses boost cache expiry and how disk contention can be a real issue Tags Drupal Planet Drupal Performance Dedicated Servers Cloud Virtuozzo Xen VPS Contents Articles Case study Views Quicktabs and template php up Configuring Apache Solr 3 6 for Drupal on Ubuntu 14 04 with password authentication Add new comment Comments Always insightful Submitted by Drupleg not verified on Thu 2013 04 18 17 38 I click on every article I see by 2bits com always very insightful real world down and dirty performance information I have a small non profit client on AWS EC2 experiencing these very issues right now intermittently this article is very helpful in helping me understand what is actually happening Thanks reply I have read that on EC2 if Submitted by Visitor not verified on Tue 2013 06 04 20 33 I have read that on EC2 if you simply stop the instance Then restart the instance it comes up on different hardware The advice being that if it starts acting strange just stop and start the instance it might even out again new housemates So I d agree rather than spend days trying to figure out what is wrong with the plumbing just move to a new house I even wrote a batch file to do that very thing My instance restarts in like 5 minutes reply You sure can virtualize Submitted by Marcin not verified on Thu 2013 06 20 09 47 You sure can virtualize storage perhaps not on the hypervisors you mentioned but it s possible on ESXi You can limit each vm instance to certain number of IOPS The problem is not the technology here it s hosting companies One way to overcome disk contention at least in my case was to move Boost cache to memory reply VPS vs Cloud Hosting Submitted by Wes Regen not verified on Thu 2013 09 26 20 16 I would suggest to anyone that you go for VPS It seems to be the more reliable solution I tried a lot of those VPS and cloud solutions and didn t find proper one Eventually found Limy VPS and their free trial offer tested it and decided to subscribe for Advanced Plan It is the best option for my small online business and very glad I found reliable company I would recommend to everyone to visit Limy VPS and sign up for 7 days free trial reply If AWS instance is expensive Submitted by Azaz not verified on Mon 2016 03 28 04 17 If AWS instance is expensive for you then why not try out DigitalOcean for your Drupal website If you find installing Drupal on cloud difficult then try out managed hosting platforms like Cloudways Managed platforms offer 1 click hosting option There is no need to use command line reply Command line Submitted by Khalid on Mon 2016 03 28 08 42 There is no need to use command line Wow Indeed there is no need The newbies prefer clicking and more often than not do not understand the underlying concepts That is fine But most of us experienced sysadmins and devs prefer the command line We do not see it as a hindrance but rather as a powerful toolset that we like using reply Is your Drupal or WordPress site slow Is it suffering from server resources shortages Is it experiencing outages Contact us for Drupal and WordPress Performance Optimization and Tuning Consulting Contents Services Clients Testimonials News FAQ Payments Site Map Navigation Payment Recent content Do you use any of our Drupal modules Did you find our Drupal WordPress and LAMP performance articles informative Follow us on Twitter 2bits for tips and tricks on Drupal and WordPress Performance Contact us for Drupal and WordPress Performance Optimization and Tuning Consulting In Depth Articles Client Testimonials Developing tracing and debugging Drupal Drupal Performance Tuning and Optimization for large web sites PHP op code caches accelerators Drupal large site case study Abuse Drupal Best Practices at your own peril Poor Performance Admin Menu module Popular yet occasionally problematic Another botnet spamming Drupal web sites causing performance issues Apache 2 and PHP5 on Ubuntu Feisty bloated Apache with fcgid acceptable performance and better resource utilization Avoid excessive disk writes by avoiding PHP errors in your code Benchmarking APC vs eAccelerator using Drupal Benchmarking Drupal 5 x vs 6 x which one is faster Benchmarking Drupal from the shell command line

    Original URL path: http://2bits.com/comment/2146 (2016-05-02)
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  • Common Issues and Solutions for Dealing with Cloud Computing and VPS performance issues for Drupal | 2bits.com, Inc. - Drupal Performance Tuning and Optimization, Managed Hosting and Consulting
    en 0 42 cache get SELECT data created headers expire FROM cache WHERE cid bc 87 redacted 0 36 cache get SELECT data created headers expire FROM cache WHERE cid bc 54 redacted 0 19 cache get SELECT data created headers expire FROM cache WHERE cid filter 3 0b81537031336685af6f2b0e3a0624b0 0 18 cache get SELECT data created headers expire FROM cache WHERE cid bc 88 redacted 0 18 block list SELECT FROM blocks WHERE theme redacted AND status 1 ORDER BY region weight module Then suddenly same site same server and you get Executed 55 queries in 2237 67 milliseconds Page execution time was 2323 59 ms This was a Virtuozzo host and it was a sign of disk contention Since this is a virtual server we could not tell if this is something inside the virutal host or some other tenant on the same physical server flushing the toilet The solution is in the following point Move your VPS to another physical server When you encounter variable performance or poor performance before wasting time on troubleshooting that may not lead anywhere it is worthwhile to contact your host and ask for your VPS to be moved to a different physical server Doing so most likely will solve the issue since you effectively have a different set of housemates Further Reading Drupal on Dedicated vs Amazon AWS EC2 and how we halved the cost of Amazon by going dedicated Hosting Virtualization Virtuozzo OpenVZ vs Xen which is best has real life issues from sites we ve helped When Boost slows down your Drupal site discusses boost cache expiry and how disk contention can be a real issue Tags Drupal Planet Drupal Performance Dedicated Servers Cloud Virtuozzo Xen VPS Contents Articles Case study Views Quicktabs and template php up Configuring Apache Solr 3 6 for Drupal on Ubuntu 14 04 with password authentication Add new comment Comments Always insightful Submitted by Drupleg not verified on Thu 2013 04 18 17 38 I click on every article I see by 2bits com always very insightful real world down and dirty performance information I have a small non profit client on AWS EC2 experiencing these very issues right now intermittently this article is very helpful in helping me understand what is actually happening Thanks reply I have read that on EC2 if Submitted by Visitor not verified on Tue 2013 06 04 20 33 I have read that on EC2 if you simply stop the instance Then restart the instance it comes up on different hardware The advice being that if it starts acting strange just stop and start the instance it might even out again new housemates So I d agree rather than spend days trying to figure out what is wrong with the plumbing just move to a new house I even wrote a batch file to do that very thing My instance restarts in like 5 minutes reply You sure can virtualize Submitted by Marcin not verified on Thu 2013 06 20 09 47 You sure can virtualize storage perhaps not on the hypervisors you mentioned but it s possible on ESXi You can limit each vm instance to certain number of IOPS The problem is not the technology here it s hosting companies One way to overcome disk contention at least in my case was to move Boost cache to memory reply VPS vs Cloud Hosting Submitted by Wes Regen not verified on Thu 2013 09 26 20 16 I would suggest to anyone that you go for VPS It seems to be the more reliable solution I tried a lot of those VPS and cloud solutions and didn t find proper one Eventually found Limy VPS and their free trial offer tested it and decided to subscribe for Advanced Plan It is the best option for my small online business and very glad I found reliable company I would recommend to everyone to visit Limy VPS and sign up for 7 days free trial reply If AWS instance is expensive Submitted by Azaz not verified on Mon 2016 03 28 04 17 If AWS instance is expensive for you then why not try out DigitalOcean for your Drupal website If you find installing Drupal on cloud difficult then try out managed hosting platforms like Cloudways Managed platforms offer 1 click hosting option There is no need to use command line reply Command line Submitted by Khalid on Mon 2016 03 28 08 42 There is no need to use command line Wow Indeed there is no need The newbies prefer clicking and more often than not do not understand the underlying concepts That is fine But most of us experienced sysadmins and devs prefer the command line We do not see it as a hindrance but rather as a powerful toolset that we like using reply Is your Drupal or WordPress site slow Is it suffering from server resources shortages Is it experiencing outages Contact us for Drupal and WordPress Performance Optimization and Tuning Consulting Contents Services Clients Testimonials News FAQ Payments Site Map Navigation Payment Recent content Do you use any of our Drupal modules Did you find our Drupal WordPress and LAMP performance articles informative Follow us on Twitter 2bits for tips and tricks on Drupal and WordPress Performance Contact us for Drupal and WordPress Performance Optimization and Tuning Consulting In Depth Articles Client Testimonials Developing tracing and debugging Drupal Drupal Performance Tuning and Optimization for large web sites PHP op code caches accelerators Drupal large site case study Abuse Drupal Best Practices at your own peril Poor Performance Admin Menu module Popular yet occasionally problematic Another botnet spamming Drupal web sites causing performance issues Apache 2 and PHP5 on Ubuntu Feisty bloated Apache with fcgid acceptable performance and better resource utilization Avoid excessive disk writes by avoiding PHP errors in your code Benchmarking APC vs eAccelerator using Drupal Benchmarking Drupal 5 x vs 6 x which one is faster Benchmarking Drupal from the shell command line

    Original URL path: http://2bits.com/comment/2145 (2016-05-02)
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  • Installing and Configuring Redis for Drupal 7, and other Memcached Alternatives | 2bits.com, Inc. - Drupal Performance Tuning and Optimization, Managed Hosting and Consulting
    Drupal Redis or Memcached modules and not have to write and test yet another caching module Non Memory Resident Storage We want to reduce the memory foot print of Redis Memcached because they both store the entire key value combinations in memory But still wanted to get acceptable performance The following products all claim to meet the above criteria but none of them worked for us They were tested on Ubuntu LTS 14 04 64 bit MongoDB Using MongoDB article for more details MemcacheDB MemcacheDB is a Memcached compatible server which used the excellent Berkeley DB database for storage This MemcacheDB presentation explains what it does in detail It has an Ubuntu package right in the repository so no need to compile from source or manually configure it It works flawlessly The N option enable the DB TXN NOSYNC option which means writes to the database are asynchronous providing a huge performance improvement Configuration in Drupal s settings php is very easy it is exactly like Memcached with only the port number changing from 11211 to 21201 Alas all is not rosy it is not really a cache layer since it does not expire keys values based on time like Memcached and Redis does Redis NDS Redis NDS is a fork of Redis 2 6 patched for NDS Naive Disk Store It does compile and run but when the line nds yes is added to the configuration file it is rejected as an invalid value Looking briefly in the source we also tried nds enabled yes but that was rejected as well So we could not get it to run in NDS mode ARDB ARDB is another NoSQL database that aims to be Redis protocol compatible We compiled this with three different storage engines The Facebook RocksDB did not compile to begin with Google s LevelDB compiled cleanly and so did WiredTiger But when trying to connect Drupal to it Drupal hanged and never came back with both engines SSDB SSDB is also another NoSQL database that tries to be Redis protocol compatible It compiled cleanly but had the same symptom as ARDB Drupal hangs and never receives back a reply from SSDB There are a couple of sandbox projects here and here that aim for native integration but no code has been committed so far in two years If you were able to get any of the above or another Redis Memcached compatible caching engine working please post a comment below Resources A useful article on Redis persistence Make sure you read this in conjunction with Redis own documentation on presistence Redis documentation on memory optimization The Pantheon Redis instructions are useful even though they are specific to their hosted service Tags Redis Caching memcache memcached MemcacheDB ARDB SSDB Redis NDS Drupal Drupal Planet MongoDB Contents Articles Installing Varnish 3 x on Ubuntu Server 12 04 LTS and using Munin to monitor it up Installing eAccelerator 0 9 5 1 on Ubuntu Feisty 7 04 Add new comment Comments Comparison Submitted by Damien McKenna not verified on Tue 2016 03 22 09 08 Any plans to do a comparison of memcached to Redis reply Which area s Submitted by Khalid on Tue 2016 03 22 09 23 Compare which areas Pure performance reply Performance Submitted by Damien McKenna not verified on Thu 2016 03 24 06 59 Yes performance reply Asynchronous Prefetch Database Query Cache Submitted by mikeytown2 not verified on Wed 2016 03 23 14 15 I ve found that the main issue when using MySQL as the cache backend has to do with the way queries are ran against it inside of Drupal and bad MySQL defaults I ve fixed every issue I ve come across when using MySQL as the cache backend As usual the status report page is helpful for configuration after installing this module https www drupal org project apdqc We ve had over 300 concurrent connections to MySQL from logged in users and didn t notice any slowdowns I m sure there are other use cases that I haven t thought of so any feedback would be appreciated reply Very good work Submitted by Khalid on Wed 2016 03 23 14 31 This is very good work Rather than it being just a cache layer I would love to see much of it within Drupal just like you did with the watchdog async writes That would benefit lots of areas in Drupal Caching can stay in memory caches like Memcached and Redis reply It started out as a bunch of Submitted by mikeytown2 not verified on Wed 2016 03 23 21 05 It started out as a bunch of core patches and I then rolled it into a module Drupal no longer hits a wall with the database once the site gets a good amount of traffic if using APDQC For the most demanding sites I totally agree that a memory cache is needed but I have yet to encounter a need for a non db cache while using APDQC Noted that I have plans to replace menu inc and path inc so I should see more gains in those areas once the queries have been designed for async and are MySQL specific reply Is your Drupal or WordPress site slow Is it suffering from server resources shortages Is it experiencing outages Contact us for Drupal and WordPress Performance Optimization and Tuning Consulting Contents Services Clients Testimonials News FAQ Payments Site Map Navigation Payment Recent content Do you use any of our Drupal modules Did you find our Drupal WordPress and LAMP performance articles informative Follow us on Twitter 2bits for tips and tricks on Drupal and WordPress Performance Contact us for Drupal and WordPress Performance Optimization and Tuning Consulting In Depth Articles Client Testimonials Developing tracing and debugging Drupal Drupal Performance Tuning and Optimization for large web sites PHP op code caches accelerators Drupal large site case study Abuse Drupal Best Practices at your own peril Poor Performance Admin Menu module Popular

    Original URL path: http://2bits.com/comment/2144 (2016-05-02)
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