Custom rate-limiting policy for OSB services by Hugo Hendriks

October 8, 2019 Leave a comment

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A rate limiting policy is a policy which you can configure so that certain clients can only make a certain amount of calls on your service. For example you can make it SLA based. Another benefit is that you can prevent clients to flood your service which requests which can overload a backend system. This could be accidental or it might be on purpose (DDOS attack). Most API platforms like Mulesoft, Dell Boomi and Oracle API Platform Cloud Service have these out-of-the-box but the On-Prem version of SOA Suite doesn’t come out of the box with such a policy. Time to make one of our own.

Implementation

In a previous post, I created a policy which could send data to an Elastic stack. See here. Again we are going to create a custom policy to check if a certain type of IP isn’t doing too much calls within 1 minute.

I am going to re-use the BaseAssertionExecutor of last time and make a new implementation. I am going to make the amount of calls configurable. So every unique IP can a certain amount of calls per minute. For easy testing purposes, my default is 10. See here the code for my RateLimitingAssertionExecutor: Read the complete article here.

 

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Technorati Tags: SOA Community,Oracle SOA,Oracle BPM,OPN,Jürgen Kress

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Unknown's avatarAbout Jürgen Kress
As a middleware expert Jürgen works at Oracle EMEA Alliances and Channels, responsible for Oracle’s EMEA Fusion Middleware partner business. He is the founder of the Oracle SOA & BPM and the WebLogic Partner Communities and the global Oracle Partner Advisory Councils. With more than 5000 members from all over the world the Middleware Partner Community is the most successful and active community at Oracle. Jürgen manages the community with monthly newsletters, webcasts and conferences. He hosts his annual Fusion Middleware Partner Community Forums and the Fusion Middleware Summer Camps, where more than 200 partners get product updates, roadmap insights and hands-on trainings. Supplemented by many web 2.0 tools like twitter, discussion forums, online communities, blogs and wikis. For the SOA & Cloud Symposium by Thomas Erl, Jürgen is a member of the steering board. He is also a frequent speaker at conferences like the SOA & BPM Integration Days, JAX, UKOUG, OUGN, or OOP.

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