My notes from ChatGPT: List of Cancer hospitals in India

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Here is a list of some well-known cancer hospitals in India: Tata Memorial Hospital, Mumbai : One of the oldest and most reputed cancer hospitals in India, known for its comprehensive cancer care and research. All India Institute of Medical Sciences (AIIMS), New Delhi : AIIMS is a premier medical institute in India with a dedicated cancer treatment center that offers advanced care and research facilities. Adyar Cancer Institute, Chennai : Known for its expertise in cancer treatment and research, particularly in radiation oncology and surgical oncology. Rajiv Gandhi Cancer Institute and Research Centre, Delhi : A leading cancer hospital providing comprehensive cancer care with state-of-the-art facilities. Cancer Institute (WIA), Chennai : Founded by Dr. Muthulakshmi Reddy, it is one of the oldest cancer hospitals in India, known for its pioneering work in cancer treatment and research. Apollo Hospitals, Chennai : Part of the Apollo Group, it offers specialized cancer care across various...

Azure API Management - Using Client IP Address as the Counter Key for Rate Limiting Policies

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Hey friends, How are you all?

Today, I am going to share how we can implement Rate Limit Policies and Counter by Client IP Address.

So, let's understand the problem first:

PROBLEM: 

  • We need to implement Rate Limit Policy by Client IP Address on Azure API Management. I followed this article first of all and found that I can use the following piece of code.


  • There was a second problem for me as the requests were coming through cloudflare and hence the client IP address was not available in context.Request.IpAddress

SOLUTION:
  • I was getting IPAddress as 0.0.0.0 in the app insights which is right as per GDPR, I used this link to confirm the client IP address in the pre-prod environments in App Insights.
  • I found that CloudFlare exposes the Client IP Address in the X-Forwarded-For or True-Client-IP Header to expose the client IP Address. Check out the details here.
  • I followed this link to strengethen my understanding on how to use Policy Expressions
  • The final piece: Ultimately, I used the following piece to counter by Client IP Address


Notice, the code in the counter-key, it is prettymuch C# in the razor block. For a single line statement, you can use @() and for multi-line statements, you can use Happy Coding!!!