AWS - Lambda
A serverless function is not triggering on new file uploads to S3. What is a likely cause?
A serverless function is not triggering on new file uploads to S3. What is a likely cause?
medium📝 Debug Q7 of 15
Step-by-Step Solution
Solution:
Step 1: Check event trigger setup
Serverless functions need correct event triggers to respond to events like S3 uploads.Step 2: Identify cause of no trigger
If trigger is misconfigured, function won't run on uploads regardless of code or bucket content.Final Answer:
The event trigger is not properly configured for the S3 bucket -> Option CQuick Check:
No trigger = misconfigured event source [OK]
Quick Trick: Check event triggers if function doesn't run [OK]
Common Mistakes:
MISTAKES- Blaming function code length
- Assuming empty bucket stops triggers
- Thinking memory size affects triggering
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