[Solved] This code snippet is intended to enforce per-IP rate limits but has a bug:requests_per_ip = {"1.2.3.4": 8} ip_limit = 10 ip = "1.2.3.4" if requests_per_ip[ip] > ip_limit:... | Rest API

Rest API - Rate Limiting and Throttling

This code snippet is intended to enforce per-IP rate limits but has a bug:

requests_per_ip = {"1.2.3.4": 8}
ip_limit = 10
ip = "1.2.3.4"

if requests_per_ip[ip] > ip_limit:
    print("Limit exceeded")
else:
    print("Allowed")

What is the bug and how to fix it?

ABug: Uses > instead of >=; fix by changing to >=.

BBug: ip variable is wrong type; fix by converting to string.

CBug: requests_per_ip key missing; fix by adding default value.

DBug: prints wrong message; fix by swapping print statements.

Step-by-Step Solution

Solution:

Step 1: Analyze condition logic
The code blocks requests only if requests_per_ip[ip] > ip_limit, so if requests equal ip_limit, it allows the request.
Step 2: Fix condition to include equal case
Change > to >= so requests equal to ip_limit also get blocked.
Final Answer:
Bug: Uses > instead of >=; fix by changing to >=. -> Option A
Quick Check:
Use >= to block at limit [OK]

Quick Trick: Use >= to block requests at limit, not just above [OK]

Common Mistakes:

Ignoring equal case in condition
Assuming IP variable type is wrong
Thinking missing keys cause this bug

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This code snippet is intended to enforce per-IP rate limits but has a bug:

Step 1: Analyze condition logic

Step 2: Fix condition to include equal case

Final Answer:

Quick Check:

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