Comparing mod_proxy and mod_jk

Comparing mod_proxy and mod_jk

Introduction

Apache 2.2 ships with advanced mod_proxy set of modules that have some of the mod_jk capabilities namely AJP protocol and integrated load balancer. 

AJP (Apache Jserv Protocol) with it's current version 1.3 is constant binary protocol. Constant means that the connection between web server and application server is presumed to stay open once established for the system lifetime. 

This in essence makes web server and application server a single system from the users point of view. 

Liferay 6.1 integration with Solr Search Engine

Liferay 6.1 integration with Solr Search Engine

Solr is the popular, blazing fast open source enterprise search platform from the Apache Lucene project. Its major features include powerful full-text search, hit highlighting, faceted search, dynamic clustering, database integration, and rich document (e.g., Word, PDF) handling. Solr is highly scalable, providing distributed search and index replication, and it powers the search and navigation features of many of the world's largest internet sites. Refer to Apache Solr.

We have made enhancement to the search infrastructure of the portal recently. We abstracted out Lucene as a search engine, now people can build plugins that integrate with others search engines frameworks.

Liferay 6.1 Clustering using mod_jk Connector

Clustering allows us to run portal instances on several parallel servers. The load is distributed across different servers, and even if any of the servers fails, the portal is still accessible via other cluster nodes. Clustering is crucial for scalable portal enterprise, as you can improve performance by simply adding more nodes to the cluster.

For larger installations, you would likely need a clustered configuration in order to handle the traffic of popular website. A cluster allows us to distribute the traffic coming in to website to several machines. Sure the cluster allows websites to handle more web traffic at a faster pace than it would be possible with a single machine.Definitely the portal works well in a clustered environment.

Liferay Portal clustering using Apache Load Balancer

Liferay Portal clustering using Apache Load Balancer

Load balancing is one of the most popular in the world due to its impressive ease-of-use. Load balancing is techniques to distributed load on multiple-system. The load-balancing process is completely transparent to the end user. It’s configured optimally for a multiple server environment. If one server isn’t sufficient to serve the high traffic needs of your site, Liferay scales to the size you need.