You might have heard that developing an application in Java is not child's play and demands expertise in a number of complex technologies. The truth is somewhat different. Designing and developing a Java/J2EE application is not such of a cumbersome task. In fact, with expert assistance and a suitable approach you can create a desirable application and reap the benefits of this robust, secure and resourceful platform.
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However, it is not denied that the platform often creates challenges that, if not dealt with appropriately, can slow down or even freeze your application. Thus, if interested you may hire a J2EE programmer to ensure a successful Java/J2EE application. Or you may learn some effective tips to be an expert in the platform. Here is a list of a few common challenges that can be encountered when developing a J2EE application and solutions to those challenges.
Challenge and Solution
- Infinite Loops: This issue can occur in any wait-bound or CPU-bound variants, where a thread is stuck in statement like while (true), or any other.
Solution: In this case, the invasive loop-ectomy can come to your rescue.
- Deadlock or Livelock: The deadlocks and livelock can occur in threads and is often caused due to the order-of-acquisition issue.
Solution: It can be managed by verifying whether there is a need for locking or not. To determine this, one can choose any of the following options:
- Master lock
- Deterministic order-of-acquisition
- Banker's algorithm
- External System is Overused: In this case, the application generates a large number of requests to a backend system.
Solution: This generally occurs due to redundant requests, so ensure a minimum of that. You can split a large request into numerous smaller requests. And, make sure that you have batched the similar work requests, tuned the back-end system or work requests.
- Under-Allocation or Over-usage: The internal resource bottleneck causes this problem. In this situation, you won't be able to gather sufficient internal resources including pooled objects and threads. You might observe a substantial decrease in speed, it will slow your app performance and may generate aberrant errors and hangs while executing.
Solution: Over-usage can be dealt with by taking the same measures that are advised in the case of when the external system is overused. To minimize the impact of Under Allocation, set the maximum pool size depending on the highest load that you expect from your program.
- Layer-itis: The general cause of this problem is a badly deployed bridge layer like a COBRA link to a legacy system or JDBC driver that reduces the traffic speed and initiates constant unmarshaling and marshaling of requests and data. This consistently slows down the running program with an increasing load. When this problem begins, it somehow appears similar to the external bottleneck issue.
Solution: Identify the version compatibility of the external system and bridge layer and determine all the bridge vendors available out there. And further, to by the layer, you may need to re-architect the affected layers together.
- External Bottleneck: In this kind of problem the speed of any external system, including backend authentication system and so on degrades and that further slows down the J2EE application and server performance.
Solution: To remedy this issue, it is recommended to hire some professional services from one who masters treating the external bottleneck.
These are a few of the common challenges and their appropriate solutions. Likewise, you may find some other solution as well. Implement the suitable solution to rectify the occurred issue, however, it is advisable to thoroughly review and cross-check the identified issue, since implementing a wrong solution may affect your application performance.