|By Jessica Qiu||
|December 2, 2013 04:45 AM EST||
The Big Data Real-time Application is a scenario to return the computation and analysis results in real time even if there are huge amounts of data. This is an emerging demand on database applications in recent years.
In the past, because there wasn't a lot of data, the computation was simple, and few parallelisms, the pressure on the database wasn't great. A high-end or middle-range database server or cluster could allocate enough resources to meet the demand. Moreover, in order to rapidly and parallel access to the current business data and the historic data, users also tended to arrange the same database server for both the query analysis system and the production system. This way, the database cost could be lowered, the data management streamlined, and the parallelism ensured to some extent. We are in the prime time of database real-time application development.
In recent years, due to the data explosion, and more diversified and complex applications, new changes have occured to the database system. The obvious change is that the data is growing at an accelerated pace. Applications are increasingly complex, and the number of concurrent access makes no exception. In this time of big data, the database is under increasing pressure, posing a serious challenge to the real-time application.
The first challenge is the real-timeness. With the heavy workload on the database, the database performance drops dramatically, the response is sluggish, and user experience is going from bad to worse quickly. The normal operation of the critical business system has been affected seriously. The real-time application has actually become the half real-time.
The second challenge is the cost. In order to alleviate the performance pressure, users have to upgrade the database. The database server is expensive, so are the storage media and user license agreement. Most databases require additional charges on the number of CPUs, cluster nodes, and size of storage space. Due to the constant increase of data volume and pressure on database, such upgrade will be done at intervals.
The third challenge is the database application. The increasing pressure on database can seriously affect the core business application. Users would have to off-load the historic data from the database. Two groups of database servers thus come into being: one group for storing the historical data, and the other group for storing the core business data. As we know, the native cross-database query ability of databases are quite weak, and the performance is very low. To deliver the latest and promptest analysis result on time, applications must perform the cross-database query on the data from both groups of databases. The application programing would be getting ever more complex.
The fourth challenge is the database management. In order to deliver the latest and promptest analysis result on time, and avoid the complex and inefficient cross-database programming, most users choose to accept the management cost and difficulty increase - timely update the historic library with the latest data from the business library. The advanced edition of database will usually provide the similar subscription & distribution or data duplicate functions.
The real-time big data application is hard to progress when beset with these four challenges.
How to guarantee the parallelism of the big data application? How to reduce the database cost while ensuring the real-timeness? How to implement the cross-database query easily? How to reduce the management cost and difficulty? This is the one of hottest topics being discussed among the CIOs or CTOs.
esProc is a good remedy to this stubborn headache. It is the database middleware with the complete computational capability, offering the support for the computing no matter in external storage, across databases, or parallel. The combination of database and esProc can deliver enough capability to solve the four challenges to big data applications.
esProc supports for the computation over files from external storage and the HDFS. This is to say, you can store a great volume of historical data in several cheap hard disks of average PCs, and leave them to esProc to handle. By comparison, database alone can only store and manage the current core business data. The goal of cutting cost and diverting computational load is thus achieved.
esProc supports the parallel computing, so that the computational pressure can be averted to several cheap node machines when there are heavy workload and a great many of parallel and sudden access requests. Its real-timeness is equal or even superior to that of the high-end database.
esProc offers the complete computational capability especially for the complex data computing. Even it alone can handle those applications involving the complex business logics. What's even better, esProc can do a better job when working with the database. It supports the computations over data from multiple data sources, including various structural data, non-structural data, database data, local files, the big data files in the HDFS, and the distributed databases. esProc can provide a unified JDBC interface to the application at upper level. Thus the coupling difficulty between big data and traditional databases is reduced, the limitation on the single-source report removed, and the difficulty of the big data application reduced.
With the seamless support for the combined computation over files stored in external storage and the database data, users no longer need the complex and expensive data synchronization technology. The database only focus on the current data and core business applications, while esProc enable users to access both the historic data in external storage and the current business data in database. By doing so, the latest and promptest analysis result can be delivered on time.
The cross-database computation and external storage computation capability of esProc can ensure the real-time query while alleviating the pressure on database. Under the assistance of esProc, the big data real-time application can be implemented efficiently at relatively low cost.
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