E-commerce Metrics API Query Alerting with Lambda Webhooks for Node.js Explained

Short answer: for a small Node.js application, keep failure alerting boring. Poll one completion metric after the nightly e-commerce pipeline's deadline, require the failure state to persist across two observations, and send one deduplicated webhook containing a run identifier. Retain a compact failure record longer than the searchable logs. This gives an operator enough evidence to act without paying to keep every successful debug line searchable. The dominant bill is usually the data kept and searched, not the tiny polling function.