Are REST API thread-safe?
REST APIs are naturally multi-thread, once they can execute multiple requests at the same time. Therefore, every time you put a thread to wait for something synchronously you are wasting CPU time because that thread could be being used to handle another request.
How do I make my API thread-safe?
There are basically four ways to make variable access safe in shared-memory concurrency:
- Confinement. Don’t share the variable between threads.
- Immutability. Make the shared data immutable.
- Threadsafe data type.
- Synchronization.
Is it necessary to make restful services as thread-safe?
do you need to make it thread-safe? Since a new Resource instance is created for every incoming Request there is no need to make it thread-safe or add synchronization. multiple clients can safely access RestFull resources concurrently.
What is the difference between put and post?
PUT is meant as a a method for “uploading” stuff to a particular URI, or overwriting what is already in that URI. POST, on the other hand, is a way of submitting data RELATED to a given URI. As far as i know, PUT is mostly used for update the records. PUT – To update the created document or any other resource.
What is difference between reentrant and thread-safe functions?
Thread safe code is one that can be performed from multiple threads safely, even if the calls happen simultaneously on multiple threads. Reentrant code means that you can do all the things thread safe code can do but also gurantee safety even if you call the same function within the same thread.
Is it safe to make resttemplate thread safe?
The quote and link in the accepted answer is from Spring themselves. So it is safe to assume that RestTemplate is intended to be thread-safe, and failure to be thread safe would be a bug.
Which is an example of a thread safe REST service?
As an example, we use the following jersey rest service. It consists of a resource that increments a counter for each post call and returns the new value: This is clearly not thread safe. The access to the variable counter is not synchronized, which will lead to a race condition, if the method “addOne” is called from too many threads in parallel.
How to test a multi threaded rest service?
To test a multi threaded java rest service, we needed two things—a multi-threaded test runner and a tool that can detect Java race conditions. For the multi-threaded test I used concurrent-junit, for the race condition detection I used vmlens. If you have a question or remark, please add a comment in the comments section.
How to safely publish a resttemplate object in Java?
Using a Spring bean definition that has a does this, as the bean will be safely published by the thread setting up the container in most practical use cases. Use List.add on the reference returned by getMessageConverters () and then safely publish the changed RestTemplate object.