How to Increase Apache Request Per Second ?

-

How to Increase Apache Request Per Second ?


By default, Apache web server is configured to support 160 requests per second. As your website traffic increases, Apache will start dropping additional requests and this will spoil customer experience. 

Here’s how to increase Apache requests per second.

1. Install MPM module

We need to install MPM Apache module to be able to increase Apache requests per second. You can use mpm_worker or mpm_event module for this, instead of mpm_prefork module which consumes a lot of memory.

You can easily install MPM module in Apache with following command

For CentOS7/RHEL7 : Adjust /etc/httpd/conf.modules.d/00-mpm.conf

Comment the line LoadModule mpm_prefork_module modules/mod_mpm_prefork.so by adding # in front of it.

Uncomment the line LoadModule mpm_worker_module modules/mod_mpm_worker.so by removing # in front of it.

For Ubuntu/Debian :  Use a2dismod / a2enmod to disable mpm_prefork and enable mpm_worker


2. Increase Max Connections in Apache


Open MPM configuration file:


CentOS/RHEL


$ sudo vi /etc/httpd/conf.modules.d/00-mpm.conf


Ubuntu/Debian


$ sudo vi /etc/apache2/mods-available/mpm_worker.conf


you will see the following lines


StartServers 5

MinSpareServers 5

MaxSpareServers 10

MaxRequestWorkers 150

MaxConnectionsPerChild 0


In case you do not see the configuration , It means Apache is using the default configuration. 


You can change them to the following configuration to increase max requests per second. The following configuration supports up to 8000 concurrent users


<IfModule mpm_worker_module>

        ServerLimit 250

        StartServers 10

        MinSpareThreads 75

        MaxSpareThreads 250

        ThreadLimit 64

        ThreadsPerChild 32

        MaxRequestWorkers 8000

        MaxConnectionsPerChild 10000

</IfModule>


You can also add the above lines to Apache web server configuration file, or Virtual host configuration file.


et’s quickly look at the parameters


Serverlimit – Maximum number of Apache processes


StartServers – Number of processes to start when you start running Apache


MinSpareThreads/MaxSpareThreads – Number of threads to keep idle without being killed


ThreadsPerChild – Number of threads per process


MaxRequestWorkers – Number of concurrent connections to be supported. This is the main directive that you need to change to increase max connections in Apache


MaxConnectionsPerChild – Number of connections to be handled by each child before it is killed

Open MPM configuration file:


To get the configurations to take effects , you have to restart the server. 


3. Testing if the configuration is working or not ?


To check if the above configurations are working fine or not. You need to check the running process. 
post restart you should see the 10 httpd process running. 

Please note , process may be come down if there is no enough traffic on Apache , and it will come up by itself when the load / traffic increases. 





Comments

  1. AnonymousMarch 5, 2023 at 9:39 PM

    I liked your work and the way in which you have shared this article here about...about software developer.. It is a beneficial and helpful article for us. Thanks for sharing an article like this.

    ReplyDelete
  2. AnonymousApril 27, 2023 at 9:09 PM

    You've provided here with great substance. I'm happy that I came into this article because it has a wealth of useful information. I appreciate you sharing such an informative article.Offshore Java Developers

    ReplyDelete

Post a Comment

Popular Posts

how to clear dispatcher cache in aem ?

-
Image
How to clear dispatcher cache in aem ? As you may know, the Dispatcher cache in Adobe Experience Manager (AEM) is used to improve the performance of your website by caching static resources and pages. However, sometimes you may need to clear the cache to ensure that the latest content and changes are displayed on your website. In this blog post, we'll show you how to clear the Dispatcher cache in AEM.   This method will clear the entire Dispatcher cache, including all cached pages and resources. Keep in mind that clearing the cache may affect the performance of your website, as it may take some time to rebuild the cache. Clear Cache using the Dispatcher Flush Agent You can use the Dispatcher Flush Agent. Follow these steps:   Log in to your AEM instance and navigate to http://localhost:4502/etc/replication/agents.author.html . Click on the "Dispatcher Flush" agent to open the agent's configuration page. Clic
Read more

AdobeDispatcherHacks ".statfile"

-
Image
AEM DISPATCHER STATFILE UNDERSTANDING & CACHE INVALIDATION:- AEM Developers, Infrastructure Engineers regularly come across a challenge on decoding the statfile and using it efficiently especially statfile becomes highly relevant in a multi-tenanted environment with different project teams controlling different sites. The article addresses in a simple way on how to understand the mechanisms of stat file and gives a detailed explanation of how it can be used in a multi-tenant environment model.  The image for your reference as a quick overview of the data flow, before we take a deep dive.  This article covers - 1 - When dispatcher serves the old version of the content. How to avoid it. 2- Cache invalidation mechanism. Assumption - If you are reading this article, I believe you would have a basic understanding of Dispatcher and it's configuration. Firstly let’s set the initial configuration for the cache invalidation section of the dis
Read more

How Does S3 works with AEM ?

-
Image
How Does S3 works with AEM  ? Accommodating a huge amount of assets in any content management platform is challenging. Adobe Experience Manager offers an integration with the Amazon S3 storage solution, allowing binary data for images, documents and videos to be stored in an S3 bucket. Amazon S3 is highly performant and offers nearly infinite storage capacity.   When talking about terabyte storage, performance is everything. The choices made during the planning and architecting phase can literally make or break the performance of a CMS system and the websites running on it.  Adobe Experience Manager offers a number of storage methods, each offering a different way of storing data. Each of these options has its strengths and weaknesses. In AEM storage the mechanisms are called Micro Kernels, or MK for short.  In this article we will look at the AEM with S3 data store. For the detailed steps for S3 configuration you can refer -  https://www.aemrules.com/2022/05/how-to-configure-s3-in-aem
Read more

How to Sync HMAC in AEM ?

-
Image
Crypto Support in AEM (Syncing HMAC among AEM instances) AEM OOTB provides a feature where we can encrypt the secured and confidential data through OOTB AEM Crypto Support and store it in a code repository in the form of OSGi configuration. Crypto Support is based on keys (hmac and master files) which are unique for each AEM instance. Encrypted text generated for the same plain-text string on one AEM instance will be different from another instance. This can raise alarms in cases where we have the same OSGi configuration values shared among Author and Publish instances under the same topology. For e.g. /apps/project/config.prod/com.day.cq.db.dbservice.xml Here DB password for Default DB Service will be same across all Prod AEM instances. So, in order to make sure that the same encrypted value works on all Prod instances, we will have to sync hmac and master files among Prod Author and Publish instances. Vital Points to know before HMAC SYNC  Sync of HMAC/keys will break the AEM SSL and
Read more

Configure/Decoding AEM AuditLogs

-
Image
AEM Developers, Infrastructure Engineers / Dev-ops teams working in the financial domain regularly come across a challenge for event auditing in AEM. This helps in identifying most of the activities happening in AEM. Audit logs are a very effective way to debug the content issue & to know what all is happening in your environment and by whom. This article addresses in a simple way on how to enable the audit logs, its different ways, and how to understand the audit logs.  This article covers the following - How can we enable Audit logs in AEM. How can we read and understand the Audit logs/ tools to use it. Audit log on file system in crx-quickstart/logs folder.   Audit logs for User creation / Modification. How can you archive/purge the audit logs. How can we enable Audit logs in AEM?            By Default, the Audit logs are pre-configured in AEM, for a few basic operations of DAM and for all other operations of Pages and replications activity etc.. To ge
Read more

AEM Security Headers

-
Image
Added Security in AEM via Headers:-  In design a robust architecture AEM Architects, Developers, Infrastructure Engineers regularly come across a challenge for adding the additional security in AEM.  In this article, we will understand the key security headers which can be used in webserver and give an additional layer of security for your Publish server and content.  I have used Apache webserver for all the examples.  This article covers -  1 - X-XSS protection  2 - HTTP Strick Transport Security 3 - X-Frame Option  4 - Content Security  1- X-XSS Protection:-  X-XSS-Protection header can prevent some level of XSS (cross-site-scripting ) attacks.  Configure the x-xss-protection header to 1 in your apache httpd.conf file or Vhost file if you have for all domains as applicable.   <IfModule mod_headers.c>   <FilesMatch "\.(htm|html)$">                         #Force XSS (should be on by default in most browsers anyway)                  
Read more

Dispatcher flush from AEM UI

-
Image
How to Delete Dispatcher cache without logging into the Dispatcher servers? Our Authoring team faces day to day challenges while deleting/flush the dispatcher cache. when the changes are not visible on server. They have to be depended on the IT operations/Dev ops teams to do the same. Which some time get very much time consuming for a small work.  In this article we will see it can be configure and used by Author UI itself.  This will allow  AEM authors (or “super authors”) to flush parts of the dispatcher cache manually without the involvement of IT Operations. How to Use 1. Log in to AEM Author 2. Download the ACS commons tool from  ACS Commons Official page 3. Install the downloaded package via aem package manager.   4. Make sure you create the dispatcher flush agents on Author for all Dispatchers. from http://<<host:port>>/miscadmin#/etc/replication/agents.author, check the NOTE's part at the end of page. 5. Navigate to Tools 6. Under the acs-commmons/dispatcher-flu
Read more

AEM ACL and how they are evaluated

-
Image
ACL's and how they are evaluated ? AEM Developers, Infrastructure Engineers / Dev-ops teams working in any domain regularly come across a challenge for understanding the ACL & its evaluation mechanism.  Adobe Experience Manager is designed to cater for content authoring of multiple sites by multiple content authors. Naturally, this process needs to be controlled by strict Access Control Lists (ACLs) to manage. AEM WCM uses Access Control Lists (ACLs) to organise the permissions being applied to the various pages. This article addresses in a simple way on how to understand the ACL's , its different ways,  This article covers the following - How can we read and understand the ACL.  Evaluation of user permissions.  Concurrent Permission on ACL Access Control Lists are made up of the individual permissions and are used to determine the order in which these permissions are actually applied. The list is formed according to the hierarchy of the pages under consideration. How can w
Read more

How to prevent DDoS in Apache ?

-
Image
Prevent DDoS in Apache & IP Block Automation DDoS (Distributed Denial of Service) attacks are a type of cyberattack that can cause serious damage to your web server. These attacks involve flooding your server with a huge volume of traffic, overwhelming its resources and causing it to crash. In this blog post, we'll discuss how to prevent DDoS attacks in Apache, without using any third part tool/application.     Available Options to Prevent DDoS : You can use various mentioned methods to achieve the same. But using WAF, CDN, etc will cost extra dollars. Which might not be necessary for a small scale application.   Use a Web Application Firewall (WAF): A WAF can help detect and block malicious traffic before it reaches your Apache server. It can also help block common attack vectors, such as SQL injection and cross-site scripting (XSS). Install mod_evasive: mod_evasive is an Apache module that helps detect and block DDoS attacks. It wor
Read more