AWS Lambda Log Monitoring with LogMonitor

>_ why aws lambda apps need log monitoring

AWS Lambda functions execute in ephemeral environments where logs end up scattered across CloudWatch log groups. Searching CloudWatch is slow, expensive, and the interface makes debugging painful. LogMonitor streams your Lambda logs to a single Live Console so you see errors instantly without navigating the AWS console.

>_ how logmonitor works with aws lambda

Add the logmonitor-js SDK or an HTTP API call to your Lambda handler. The SDK auto-patches console.log, console.info, console.warn, console.error, and console.debug. Logs are sent to LogMonitor during function execution and appear in the Live Console in real time. The async transport ensures minimal impact on your function's execution time and cold start. Logs are only sent in production (when process.env.NODE_ENV === 'production').

>_ quick start

import { logmonitor } from 'logmonitor-js';

logmonitor.init({ apiKey: 'your-api-key' });

export const handler = async (event, context) => {

  console.log('Lambda invoked', { function: context.functionName, requestId: context.awsRequestId });

  try {

    const result = await processEvent(event);

    console.log('Processing complete', { itemsProcessed: result.count });

    return { statusCode: 200, body: JSON.stringify(result) };

  } catch (err) {

    console.error('Lambda failed', { error: err.message, event });

    return { statusCode: 500, body: 'Internal error' };

  }

};

>_ what you can monitor

• $Cold start events and initialization errors
• $Function invocation failures and timeouts
• $External API and database call errors
• $Event processing logs (SQS, SNS, API Gateway)
• $Memory and duration warnings
• $Permission and IAM errors