[Solved] What is wrong with this health check endpoint?app.get('/health', (req, res) => { res.send('OK'); res.status(200); }); | Microservices

Microservices - Resilience Patterns

What is wrong with this health check endpoint?

app.get('/health', (req, res) => {
  res.send('OK');
  res.status(200);
});

AMissing database check

BUsing GET instead of POST

CSetting status after sending response

DNot returning JSON response

Step-by-Step Solution

Solution:

Step 1: Understand response order in HTTP
HTTP status must be set before sending the response body.
Step 2: Identify the mistake in code
res.status(200) is called after res.send('OK'), so status is ignored.
Final Answer:
Setting status after sending response -> Option C
Quick Check:
Set status before sending response [OK]

Quick Trick: Always set status before sending response body [OK]

Common Mistakes:

MISTAKES

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What is wrong with this health check endpoint?