Analyze Nginx 5xx Top IPs | Dataford Interview Questions

Write a script to parse an Nginx access log and return the top 10 IP addresses with the highest number of 5xx errors.

Implement def top_5xx_ips(log_lines):, where log_lines is a list of Nginx combined-format log strings. Return a list of at most 10 IP address strings, sorted by descending 5xx count and then lexicographically by IP for ties. Ignore malformed entries and non-5xx responses.

Constraints

1 <= len(log_lines) <= 1000
Each log line is a string in Nginx combined-log format or is malformed
A valid 5xx status is an integer from 500 through 599
Return at most 10 IP addresses
Ties are ordered lexicographically by IP address

Function Signature

def top_5xx_ips(log_lines):

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Problem

Write a script to parse an Nginx access log and return the top 10 IP addresses with the highest number of 5xx errors.

Constraints

1 <= len(log_lines) <= 1000
Each log line is a string in Nginx combined-log format or is malformed
A valid 5xx status is an integer from 500 through 599
Return at most 10 IP addresses
Ties are ordered lexicographically by IP address

Function Signature

def top_5xx_ips(log_lines):

Your question is Analyze Nginx 5xx Top IPs. 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.