The “503 Service Unavailable” error is usually a very common error message on windows hosting servers.
While many software developers or software companies report that the error is caused by the server company, the related error is actually experienced by the requests that do not end on the software. On a shared hosting server with resources, when you do not end your requests, the processes continue to run on application pools and iis requests do not end. For this reason, as requests come to the site, the structure swells and problems begin to respond. Some of the well-known mistakes about this error;
- Clearing caches on the browser
- Hosting company’s business limits
- Control on a different device
It takes shape. The above operations for 503 errors will not work.
What to do when receiving a 503 Service Unavailable Error firstly detects why the application pool is full. This situation is due to certain reasons;
- Excessive resource consumption
- Receiving an attack or receiving a loaded request
- Exceeding the band limit
- Never-ending requests on the server
- Instead of a domain-based application pool, plesk panel etc. using the default repository of structures
- Error logs caused by software errors
- RAM and CPU shortage
- Infinite requests created by cyclic errors in software
Things to do to solve the problem,
- Checking whether the IIS application pool is active or not and emptying the pool.
- Task manager etc. on the server. Monitoring ram and cpu usage through systems
- Whether I / O is made on the server disk system.
- Checks whether the requests are terminated or not
- Checking and removing error logs on the software
- Knowing the required amount of resources and competencies of systems such as themes and plugins
- In shared systems, restarting the pool via iis or the panel (Note: Software requests and errors are not definitive before they result.)
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