Application server
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An application server provides business logic for application programs and supports the construction of dynamic web pages. It allows applications to run on multiple parallel servers for improved scalability and performance. Key features include clustering for load distribution, failover for automatic switching to redundant servers, and load balancing to optimize resource utilization. Application servers provide advantages like centralized configuration, data integrity, and security. Common application servers include Java Enterprise Edition servers and the Zend platform for PHP applications.
Application server
- 2. Table of contents Overview Services Clustering Fail-over Load_balancing Java appl server Zend platform Advantages Data and code integrity Centralized configuration Security Apache jserv protocol Application layer protocol
- 3. Overview An application server is a server program in a computer. Provides the business logic for an application program. The application server is frequently viewed as part of a three-tier application 1.GUI(personal computer,work station...) 2.server 3.database
- 4. Cont....
- 5. Cont... Is a software frame work
- 6. Efficient execution of procedures
- 7. programs
- 8. Routines
- 9. Scripts
- 10. Supporting the construction of application
- 11. main job is to support the construction of dynamic pages.
- 12. Services... Clustering
- 13. Fail-over
- 14. Load-balancing
- 15. Clustering Clustering allows us to run an applications on several parallel servers
- 16. The load is distributed across different servers
- 17. Even if any of the servers fails, the application is still accessible via other cluster nodes.
- 18. Clustering is crucial for scalable enterprise applications, as you can improve performance by simply adding more nodes to the cluster.
- 19. Clustering
- 20. Fail-Over I t is the capability to switch over automatically to a redundant or standby computer serve upon the failure of the previously active application
- 21. Types of fail-over
- 22. Automatic
- 23. manual
- 24. Cont... Automatic Automatic Failover where 2 servers located in 2 different geographically location. If disaster happens at host site, the secondary server will take over automatically without user or support intervention Manual In this case, user or support team intervention is needed.
- 25. Failover
- 26. Load balancing Load balancing allows an server administrator to distribute the client requests across multiple servers to optimize resource utilization. Load balancing improves server fault tolerance and end-user response time by # distributing load across servers # directing traffic away from unavailable servers.
- 28. Java application server the server behaves like an extended virtual machine for the running applications
- 29. handling transparently connections to the database at one side
- 30. connections to the web client at the other.
- 31. Java Enterprise Edition Apache Geronimo
- 33. Caucho Resin Application Server
- 35. JBoss
- 36. Jetty
- 37. Zend platform Zend offers an application server called Zend Server
- 38. U sed for running and managing PHP applications .
- 39. Advantages Data and code integrity
- 41. Security
- 42. Performance
- 43. Adv... Data and code integrity
- 44. By centralizing business logic on an individual server or on a small number of server machines, updates and upgrades to the application for all users can be guaranteed
- 46. Changes to the application configuration, such as a move of database server, or system settings, can take place centrally
- 47. Adv... Security
- 48. Devolving responsibility for authentication away from the potentially insecure client layer without exposing the database layer.
- 49. Performance
- 50. By limiting the network traffic the client–server model improves the performance
- 51. Apache jserv protocol It is a binary protocol
- 52. It can conduct inbound requests from a web server through to an application server
- 53. It also supports some monitoring in that the web server
- 54. Application protocols The main protocol which is used to connect with server is
- 55. TCP/IP protocol
- 56. TCP/IP protocol
- 57. 1.first two networking protocol
- 59. 3.it consists of application,transport,internet and link layer
- 60. Cont... BGP
- 61. FTP
- 62. HTTP
- 63. SMTP
- 64. SNMP
- 65. SOAP
- 66. Telnet
- 67. XMPP
- 68. RPC
- 69. Cont... SMTP-Simple Mail Transfer Protocol
- 70. # e-mail transmission across IP networks
- 71. # send and receive mail
- 73. # use to copy a file from one host to another
- 74. # security
- 76. Cont... HTTP-Hyper Text Transfer Protocol # for distributed,collaborative information systems SOAP-Simple Object Access Protocol # for exchanging structured information of web services in networking SNMP-Simple Network Management Protocol # it is based on UDP # used in network management system
- 77. Cont... RPC-Remote Procedure Call # allows computer for procedure to execute in another computer # without coding explicitly # called remote invocation