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Carrier Grade Service Execution Environment Carrier Grade Service Execution Environment Delivering Continuously Available Value- Added Services: Sun GlassFish Communications Server and MySQL Cluster Carrier Grade Edition A MySQL ® Technical White Paper by Sun Microsystems Copyright © 2008, Sun Microsystems Table of Contents 1 INTRODUCTION ....................................................................................................................3 2 CARRIER GRADE SERVICE EXECUTION ENVIRONMENTS .............................................3 2.1 High Availability .............................................................................................................................................................. 4 2.2 High Throughput & Instant Scalability ......................................................................................................................... 4 2.3 Minimizing Latency ......................................................................................................................................................... 4 2.4 Event Driven Architecture .............................................................................................................................................. 5 3 SUN GLASSFISH COMMUNICATIONS SERVER + MYSQL CLUSTER CARRIER GRADE EDITION .......................................................................................................................................6 3.1 Benefits .............................................................................................................................................................................. 7 3.2 High Availability .............................................................................................................................................................. 7 3.2.1 Geographical Redundancy ......................................................................................................................................... 9 3.3 Horizontal Scaling and High Throughput.................................................................................................................... 10 3.3.1 Increased throughput via efficient use of the network .............................................................................................. 12 3.3.2 Minimizing Latency ................................................................................................................................................. 12 3.4 Management of Carrier Grade Service Execution Environment .............................................................................. 13 4 CONCLUSION ...................................................................................................................... 14 5 REFERENCES ..................................................................................................................... 15 Copyright © 2008, Sun Microsystems Page 2 of 15 1 Introduction The convergence of previously separate communications networks onto a single IP-based network is revolutionizing today’s telecommunications industry. Convergence promises the opportunity for Communications Service Providers (CSPs) to reach new markets with compelling value-added communications services, delivered over fixed and wireless networks via Service Delivery Platforms. Service Delivery Platforms are designed to accelerate service deployment and reduce cost per subscriber by laying the foundation for consistent value-added service creation, execution and management. By taking advantage of Service Delivery Platforms in the deployment of services over converged networks, CSPs can differentiate themselves from their traditional competitors to increase ARPU and reduce customer churn. They can also combat new market entrants arriving from the world of the Internet which is more accustomed to the rapid delivery of new services, based on open source and open standards technology. Any opportunity comes with challenges, which must be addressed by CSPs as they seek to exploit the market opportunity presented by convergence. New services delivered over converged networks comprise ever-richer applications that can be delivered to more users requiring greater levels of customization. As a result, one of the most critical factors in successful service adoption is the need for massively scalable and continuously available service execution and data management environments, with real-time performance capabilities. Highly available application servers and carrier-grade databases are at the core of any Service Delivery Platform. The database is especially critical as more CSPs seek to consolidate subscriber and service data into single unified stores. The benefits of such unified stores cannot be underestimated when considering their value in delivering operational efficiency, time to market for new services, integration with legacy environments and interfaces to OSS/BSS platforms. Investments in SDPs represent one of the most important strategic decisions CSPs will make as they attempt to unlock the opportunity presented by network convergence. Ensuring the enabling service execution environment is highly available and scalable while capable of delivering real time performance will be the determining factor in success or failure. In this paper we explore how the Sun GlassFish Communications Server, developed under the SailFin project, and MySQL Cluster Carrier Grade Edition enables CSPs to cost-effectively address the core requirements of SDP deployments in the delivery of new services over converged networks. 2 Carrier Grade Service Execution Environments The Service Execution Environment is a key layer of any SDP, and the application servers and databases are, in turn, key components of this layer. To support the rapid adoption and monetization of new services over converged networks, the applications servers and database need to offer carrier grade capabilities, which are defined by the following attributes. Copyright © 2008, Sun Microsystems Page 3 of 15 2.1 High Availability Providing continuous service availability requires a platform with proven capabilities to withstand hardware and software failures, as well as accommodating live upgrades to both underlying infrastructure components and data structures. Any failures of hardware or software must be instantly detected and the affected services failed over immediately to surviving nodes. The time to recovery needs to include both the business logic and service data being restored to an operational state. Service state should be persisted and capable of being distributed geographically so that users do not experience service disruption. Self-healing mechanisms should allow recovered nodes to re-join the environment as quickly as possible without manual intervention. As services evolve, any upgrades to the underlying infrastructure must be accommodated without service downtime. Such upgrades can include adding or removing capacity from the service execution environment, or updating the underlying hardware and software components. Adding new services to an existing environment potentially requires changes to existing data structures. Such changes should not incur downtime so that existing services continue to run, while new services can be deployed quickly and efficiently. By employing the mechanisms discussed above, the service execution environment is capable of providing continuous availability in the event of failures or system upgrades. 2.2 High Throughput & Instant Scalability In addition to high availability, high-performance is a critical requirement in order to accommodate the massive volumes of communication service requests and database transactions typically found in the communications industry. Telecom performance requirements are usually in the range of tens of thousands of requests per second, executed with millisecond response times. These performance requirements need to be met while still maintaining continuous availability, even in the event of a network or node failure. While the rapid deployment of new services is critical to any CSP, it is almost impossible to predict their level of adoption. To reduce investment and financial exposure, it is prudent for any infrastructure supporting the service to start small, but allow for rapid and low cost scalability in the event of mass-market adoption. Scale-out allows for just such an incremental approach to increase capacity. Throughput can be increased by scaling out the infrastructure on multiple processing nodes to handle increasing numbers of simultaneous service requests and database operations, using low cost, commodity hardware and open source, open standards software. 2.3 Minimizing Latency Communications services are characterized by the requirement for predictable and fast response times to user or network requests. To achieve such requirements, it is necessary to use real time components such as carrier grade databases. Response times are dictated by the processing times of sub-systems within the network, I/O operations and the speed of network connections. Carrier Grade databases have been able to achieve low latency by using main memory data stores to limit disk I/O, and use asynchronous operations to write log files to disk. The ability to batch operations before sending to nodes for processing across a network also helps to reduce the impact of network latency. Copyright © 2008, Sun Microsystems Page 4 of 15 2.4 Event Driven Architecture Communication services are inherently asynchronous and event-driven. The communications
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