Book Image

Getting Started with Oracle Event Processing 11g

Book Image

Getting Started with Oracle Event Processing 11g

Overview of this book

Events are everywhere, events which can have positive or negative impacts on our lives and important business decisions. These events can impact a company's success, failure, and profitability. Technology now allows people from all walks of life to create Event Driven applications that will immediately and completely respond to the events that affect you and your business. So you are much more responsive to your customers, and competitive threats, and can take advantage of transient time sensitive situations. "Getting Started with Oracle Event Processing" will let you benefit from the skills and years of experience from the original pioneers who were the driving force behind this immensely flexible, complete, and award winning Event Stream Processing technology. It provides all of the information needed to rapidly deliver and understand Event Driven Architecture (EDA) Applications. These can then be executed on the comprehensive and powerful integral Java Event Server platform which utilizes the hardware and operating system.After an introduction into the benefits and uses of Event Stream Processing, this book uses tutorials and practical examples to teach you how to create valuable and rewarding Event Driven foundational applications. First you will learn how to solve Event Stream Processing problems, followed by the fundamentals of building an Oracle Event processing application in a step by step fashion. Exciting and unique topics are then covered: application construction, the powerful capabilities of the Oracle Event Processing language, CQL, monitoring and managing these applications, and the fascinating domain of real-time Geospatial Movement Analysis. Getting Started with Oracle Event Processing will provide a unique perspective on product creation, evolution and a solid understanding on how to effectively use the product.
Table of Contents (19 chapters)
Getting Started with Oracle Event Processing 11g
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Chapter 7. Using Tables and Caches for Contextual Data

So far we've learned how to create events, assemble, and configure Oracle Event Processing applications. You've learned how CQL is used to process incoming data streams. Sometimes incoming data streams do not contain all of the information that we need for the business logic. In most instances, incoming data streams contain some information about a current transaction, but other information such as customer alert preferences are contained elsewhere. This contextual information is often held in a database table and ideally for low latency applications, pushed to an in-memory cache. It is also sometimes convenient to have application-specific thresholds or other contextual information in a cache as well for lower latency access to drive better application performance.

This chapter will cover the following topics:

  • Setting up JDBC data sources

  • Enriching events using a database table

  • Setting up caching systems

  • Enriching events using a cache

  • Using...