what is IBM WebSphere application server?
First of all, a software product that perform the role of web application server is WebSphere. Further it is a software framework and middleware that hosts java based web application. It is the flagship product within IBM’s sphere suite.
Now this product developed by IBM, released on June24,2016. Initially it was released in 1998 written in java and used by platforms like X86, X86-64, Power PC, IA-64, IBM2
What is its Architecture?
Secondly, Webserver Application server came up using standards like Java EE, XML, and web services. Also, Supported on the following platforms like windows, AIX, Linux, IBMi and Z/OS, Solaris.
So, from V6.1 to V9.0 open standard specification was aligned and common across all the platforms . Thus, Platform exploitation does not surpass open standard specification. Even, it works with Number of webservers including Apache HTTP server, Netscape enterprise server, Microsoft Internet information service (IIS), IBM HTTP Server for i5/os, and IBM HTTP Server for AIX/Linux/Microsoft Windows/ Solaris. Now, connect on port 9060 as default administrative port and port 9080 as default website publication port. But, these values will change in case of installing more websystem instances.
How does traditional WebSphere differ from present WebSphere?
Most noteworthy, traditional WebSphere application server platform was distributed computing platforms and could be installed on multiple OS instances. So, collectively referred to as WebSphere cell. Hence,the deployment manager manages all instances for management node within the cell and also application including ability to perform rolling update pointed to subset of cell nodes.
- No. of nodes
- application deployed to each process of application configuration
- Sessions management
- details of other resources
- So,the above are the configuration information to entire cell, tracked in XML configuration files. However, throughout the cell to every node this information is distributed. Finally, the implementation of configuration details went from files to database (V3.5) and then to files(V5)
Deployment, Logging and Configuration are the local effects which require management. However WAS security could not override local security if not configured properly.
It was not advisable to run the application server /node agent processes with root privileges’. Starting with V6 security configuration defaulted out of the box to secure state. Sometimes enabling desired functions required changing of defaults manually. Originally all nodes of the cell were in a single domain for management support for as well as application security. After V6.1 support for multiple security domains was introduced and with it to separate administrative and application security.
History of WebSphere
First of all, WebSphere application server released in 1998 for the first time. This is version 1.0. Basically a Java Servlet engine. Also then IBM added JavaBean, Corba and Linux and this came in two editions i.e. Standard and Advanced This is Version 2.0.After this came Version 3.5 the first widely used version of WebSphere. Version4.0 a J2EE 1.2 certified application Server. Further it had database configuration model from v3.x for all but the single server edition which already used XML datastore. It came in four editions.
Version 5.0 released on 19.11.2002. This a J2EE 1.3 certified application server. Major rewrite of V3/V4 codebase. Coded from common code base for the first time. All deployment platforms from, X86 to mainframe used same code. Database repository was replaced with replication XML file based configuration repository. A service called the Deployment Manager has the master copy of cell configuration. First of all, Nodes had the files they needed copied from the master server whenever they changed. Further V5 also included miniature version of MQ 5.3 called the embedded Java message service server. This came in five editions. Thereafter then came version 5.1 a J2EE1.4 compliant application server, released on 16.1.2004. This came in six editions. These were the five minor releases of IBM
Version6.0 to 9.0
From V6.0 to 9.0 security enhancement ,integrated controls, workload managers, Manageability, performance, policy support, functionality support for several web services, Resource recovery services, Parallel sysplex support , community edition, Flexible management, business level application, property based configuration, WebSphere liberty profile including commercial editions of the server providing a light weight profile of the server for web, mobile and OSGI applications. Now the services have become open liberty where WebSphere is focusing on cloud native applications with liberty. So it has improved phase by phase to keep up with latest technologies and java EE7 and EE8 support.
Benefits of WebSphere
Very cost effective: This software chooses best application to support your business. Even existing systems are used which eliminates cost. Simple product easy to install and minimum implementation time and reduced ongoing maintenance cost.
reliability : Assures delivery of messages without duplication or disruption to order of messages when connections or endpoints are unavailable.
Expanded managed file transfer support : end to end file transfer and message traffic across the entire network is visible.
Dynamically mediates between services and application by improving flexibility by eliminating point to point integration and tightly coupled systems.
Dynamically routes and transforms data.
Reduces implementation of common flaws to minutes and eliminates errors due to inconsistencies.
It views, edit, record and replay data flowing through WMB and troubleshooting time, frustration in resolving issues which are sensitive are reduced.
The product provides security infrastructure and mechanisms to protect sensitive Java EE resources and administrative resources and to address enterprise end-to-end security requirements on authentication, resource access control, data integrity, confidentiality, privacy, and secure interoperability.
websphere programming model extensions are the model extension benefit you gain by purchasing this product.
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