Rate Limiting Function | Dataford Interview Questions

Complete public boolean isRateLimited(String requestIpAddress, String requestHttpMethod, String requestHttpPath, int requestUserId, int requestTenantId) for different cases: 1) global count, 2) path-specific request limit, 3) user + path, 4) user + path + tenant.

Asked in the coding round stage. Implement the Python equivalent as isRateLimited(requestIpAddress, requestHttpMethod, requestHttpPath, requestUserId, requestTenantId). Requests arrive sequentially, and state must persist between calls. Use limits of 10 global requests, 3 requests per path, 2 requests per user and path, and 2 requests per user, path, and tenant. Return true when the current request exceeds any applicable limit, otherwise return false. The IP address and HTTP method are accepted inputs but do not affect these four counters.

Constraints

Calls are evaluated sequentially in one long-lived process.
10 requests are allowed globally before the 11th is limited.
3 requests are allowed for each path before the 4th is limited.
2 requests are allowed for each user-path pair before the 3rd is limited.
2 requests are allowed for each user-path-tenant combination before the 3rd is limited.
requestHttpPath is a non-empty string.
requestUserId and requestTenantId are integers.

Function Signature

def isRateLimited(requestIpAddress, requestHttpMethod, requestHttpPath, requestUserId, requestTenantId):

Your question is Rate Limiting Function. Start with the requirements in the Question tab.

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Problem

Constraints

Calls are evaluated sequentially in one long-lived process.
10 requests are allowed globally before the 11th is limited.
3 requests are allowed for each path before the 4th is limited.
2 requests are allowed for each user-path pair before the 3rd is limited.
2 requests are allowed for each user-path-tenant combination before the 3rd is limited.
requestHttpPath is a non-empty string.
requestUserId and requestTenantId are integers.

Function Signature

def isRateLimited(requestIpAddress, requestHttpMethod, requestHttpPath, requestUserId, requestTenantId):

Your question is Rate Limiting Function. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.