Enterprise-Level Health-Care Applications
Database Connection Pooling is a technique that minimizes the number of connections to a database. Database connections require intensive use of database and system resources. Frequent connection and disconnection leads to overall performance degradation. In high-transaction environments, connection pooling ensures that resources are used efficiently to optimize response times and data throughput.
Today, many database vendors license their products by the number of concurrent users, connections and/or number of power units based on MHz per processor on which the database is running. eTransMan helps maintain a low cost of ownership for their transaction platform by using only those system resources that are absolutely necessary to do the job.
If we were to connect our typical daily load of 200 on-line, we would need quite a fast machine full of RAM. However, we can support those 200 users with five pooled database connections, allowing eTransMan to predictively start more connections if required.
Our system provides high uptime. By building everything in redundant, restartable small components we can provide multiple paths for the application. Business components can be run on several servers if software redundancy is inadequate, providing reliability from even total server failure. eTransMan marks those components as unavailable and routes the business to another available server. Web servers already run this way, now the applications can, too.
Application requirements come and go. Businesses change, merge, get bought, get sold—nothing stays the same. We know we'll be running different business and database components in the future than the ones we're using today. With the right architecture we also know that we can make moves such as from Web to wireless without impacting the business components. The main lesson of this process is not to get locked in to a vendor, a technology, a predefined interface, a web server or to a database.
Gary Bennett (email@example.com) is the director of IT for VistaCare, a hospice health-care company. He has over 17 years experience developing software in the medical, utility industry and military fields. When he is not looking over project Gantt charts he is looking over topo maps and planning backpacking trips in and around Arizona.
Practical Task Scheduling Deployment
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
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|The Firebird Project's Firebird Relational Database||Jul 29, 2016|
|Stunnel Security for Oracle||Jul 28, 2016|
|SUSE LLC's SUSE Manager||Jul 21, 2016|
|My +1 Sword of Productivity||Jul 20, 2016|
|Non-Linux FOSS: Caffeine!||Jul 19, 2016|
|Murat Yener and Onur Dundar's Expert Android Studio (Wrox)||Jul 18, 2016|
- Stunnel Security for Oracle
- The Firebird Project's Firebird Relational Database
- Murat Yener and Onur Dundar's Expert Android Studio (Wrox)
- SUSE LLC's SUSE Manager
- Managing Linux Using Puppet
- My +1 Sword of Productivity
- Non-Linux FOSS: Caffeine!
- Google's SwiftShader Released
- SuperTuxKart 0.9.2 Released
- Doing for User Space What We Did for Kernel Space
With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide