By Ruma Sanyal on Jan 03, 2013
Turkcell is the leading mobile phone operator of Turkey, based in Istanbul. The company has over 35 million subscribers with over 53% marketshare. In this video, Mike Lehmann, Senior Director of Product Management at Oracle and Niyazi Fellahoglu, Senior Expert, Application & Web Server Administrator at Turkcell discuss how Turkcell is using Oracle WebLogic Server and Oracle Coherence throughout the organization. Niyazi discusses their application architecture which is multi-tiered with load balancer, web tier, application tier, and business logic tier. The applications are of many types -- web based applications, messaging applications, SOA-based applications and more. With most of their applications running on WebLogic, Turkcell has a large deployment with around 550 machines, 400 domains, and 1600 instances of WebLogic Server, which has enabled high performance, scalability, stability, and ease of use across its environment. Turkcell has a robust backend infrastructure, processing 70 million messages per day. Niyazi discusses how the environment is on ‘auto pilot’J taking advantage WLST scripting. In addition, they are using Oracle Coherence for session management, server affinity, and uninterrupted performance. Turkcell is using Coherence for its classic use cases -- for offloading from backend into Coherence. Turkcell customers demand long lived (never ending) sessions. Offloading session management to Coherence enables this and makes customers happy. Another use case is to provide customers with uninterrupted service during new instance deployment or upgrade etc which again results in increased customer sat. Turkcell plans to use Enterprise manager 12c for consolidation planner and other capabilities like managing the Coherence clusters.