7c5d5f6b0d
* 1011: Added SuppressWarnings for SonarCloud errors All of these files are causing SonarCloud to report the following error: Loops should not be infinite Since these instances all require an infinite loop that will never end, these warnings should be disabled so that SonarCloud no longer reports them as error. The rule is: squid:S2189 * 1011: Made all of the randoms static and final According to SonarCloud rule: "Random" objects should be reused, randoms should not be recreated. This commit has taken all of the Randoms and made them constant variables in the files that are using them.
layout, title, folder, permalink, categories, tags
| layout | title | folder | permalink | categories | tags | ||
|---|---|---|---|---|---|---|---|
| pattern | Priority Queue Pattern | priority-queue | /patterns/priority-queue/ | Behavioral |
|
Intent
Prioritize requests sent to services so that requests with a higher priority are received and processed more quickly than those of a lower priority. This pattern is useful in applications that offer different service level guarantees to individual clients.
Explanation
Applications may delegate specific tasks to other services; for example, to perform background processing or to integrate with other applications or services. In the cloud, a message queue is typically used to delegate tasks to background processing. In many cases the order in which requests are received by a service is not important. However, in some cases it may be necessary to prioritize specific requests. These requests should be processed earlier than others of a lower priority that may have been sent previously by the application.
Applicability
Use the Property pattern when
- The system must handle multiple tasks that might have different priorities.
- Different users or tenants should be served with different priority..
Real world examples
- Priority Queue Pattern Microsoft Azure does not provide a queuing mechanism that natively support automatic prioritization of messages through sorting. However, it does provide Azure Service Bus topics and subscriptions, which support a queuing mechanism that provides message filtering, together with a wide range of flexible capabilities that make it ideal for use in almost all priority queue implementations.