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Code Completion 5 Challenges

Complete the config: Nginx Load Balancing

Fill in upstream pools, scheduling algorithms, failure handling, and keepalive.

Intermediate ~4 min read

Challenge 1

Balance by fewest active connections instead of round-robin.

nginx Your answer 
upstream apps {
    ;
    server 10.0.0.1:8080;
    server 10.0.0.2:8080;
}

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Challenge 2

Keep each client IP on the same backend.

nginx Your answer 
upstream apps {
    ;
    server 10.0.0.1:8080;
    server 10.0.0.2:8080;
}

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Challenge 3

Quarantine a flaky peer after three failures in thirty seconds.

nginx Your answer 
upstream apps {
    server 10.0.0.4:8080 ;
}

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Challenge 4

Give the bigger machine twice the share of traffic.

nginx Your answer 
upstream apps {
    server 10.0.0.1:8080 ;
    server 10.0.0.2:8080;
}

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Challenge 5

Hold 32 warm idle connections to the upstream.

nginx Your answer 
upstream apps {
    server 10.0.0.1:8080;
     32;
}

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