aws-embedded-metrics-node
powertools-lambda
aws-embedded-metrics-node | powertools-lambda | |
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7 | 5 | |
242 | 72 | |
0.8% | - | |
5.0 | 2.8 | |
about 1 month ago | 5 months ago | |
TypeScript | ||
Apache License 2.0 | MIT No Attribution |
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aws-embedded-metrics-node
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💔 Goodbye Cold Starts ❤️Hello Proactive Initialization
Lamby will now publish CloudWatch Embedded Metrics in the Lamby namespace with a custom dimension for each application's name. Captured metrics include counts for Cold Starts vs. Proactive Initializations. Here is an example running sum of 3 days of data for a large Rails application in the us-east-1 region.
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Question: How to you handle errors in your lambda ?
I was looking into CloudWatch Embedded Metrics - which is a format that converts logs into cloudwatch metrics automatically.
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Lambda Powertools TypeScript is Generally Available
Often when it comes to metrics, we think about CPU, latency and other operational metrics and AWS services usually provide those out of the box. This kind of thinking can be flawed when we end up having to use 3rd parties such as google analytics to infer critical business events. A simpler solution is to have the application emit a metric when a business event (say a customer signup) occurs. We have a few options for doing this: We can use aws-sdk, we can use the aws-embedded-metrics lib and now we can use Powertools Metrics. Which is the best? Let's see.
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Observability Best Practices when running FastAPI in a Lambda
Let's explore the next core utility in Lambda Powertools, the Metrics utility. This utility lets you easily push metrics to CloudWatch by taking care of all the necessary boilerplate. It works asynchronously by using Amazon CloudWatch Embedded Metrics Format, by logging the metrics to stdout. It also aggregates all metrics from each invocation to save on the number of calls to CloudWatch.
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How to report CloudWatch metrics without AWS SDK
To make it easier to create such an object, AWS has provided libraries for Node.js, Python, Java, and .NET. The above example using the AWS SDK can now be written as follows:
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First Look at Lambda Powertools TypeScript
Custom metrics have a pricing structure which can be expensive. Embedded Metrics Format can help manage the cost and is supported by Lambda Powertools TypeScript. Again, the docs here are pretty good, so no need for me to break it down. Instead let's look at the experience. I've added a custom metric of "collectionSuccess" to my collectionSuccess function. In my hypothetical app, some payments wind up in collections and here I'm marking whether or not the collection resulted in a payment.
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How To Debug AWS Lambda: A Detailed Overview
You can use metrics to aid debugging by adding them to your dashboards that we talked about earlier. It’s also possible to add custom metrics, and there are many libraries and tools (e.g. node, python, etc) which can help you do this.
powertools-lambda
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Lambda Powertools TypeScript is Generally Available
One final thing to consider when deciding whether to adopt Lambda Powertools is what features may be in store in the future. The more mature libraries Lambda Powertools Python and Lambda Powertools Java include a number of useful utilities that we may like to see in Lambda Powertools TypeScript. The overall Lambda Powertools Roadmap doesn't tell us very much other than pending dotnet and golang libraries, but we can drill down into TypeScript-specific issues and glimpse the immediate future. It looks like stability is still the main priority, but there are some interesting items like RFC: Testing Factories for AWS Data Objects in the leftmost column.
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First Look at Lambda Powertools TypeScript
I eagerly await the general availability of this library and will follow the roadmap to see what's coming up and how I can get involved.
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Add AWS Powertools
According to Roadmap there is some work on .Net support. Hopefully we will see it soon. Personally, I would like to see nodejs and golang support too.
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AWS Lambda Powertools: Idempotency, A Deeper Dive
If switching your development to Python for AWS Lambda Powertools is not for you, I recommend heading over to the AWS Powertools Roadmap and supporting the Typescript and .NET feature requests by adding a 👍.
- TypeScript support for AWS Lambda Powertools is now on the roadmap!
What are some alternatives?
supertest - 🕷 Super-agent driven library for testing node.js HTTP servers using a fluent API. Maintained for @forwardemail, @ladjs, @spamscanner, @breejs, @cabinjs, and @lassjs.
powertools-lambda-typescript - Powertools is a developer toolkit to implement Serverless best practices and increase developer velocity.
deno-lambda - A deno runtime for AWS Lambda. Deploy deno via docker, SAM, serverless, or bundle it yourself.
middy - 🛵 The stylish Node.js middleware engine for AWS Lambda 🛵
aws-xray-sdk-node - The official AWS X-Ray SDK for Node.js.
aws-embedded-metrics-dotnet - Amazon CloudWatch Embedded Metric Format Client Library
docker-lambda - Docker images and test runners that replicate the live AWS Lambda environment
cdk-async-testing-example
aws-embedded-metrics-python - Amazon CloudWatch Embedded Metric Format Client Library
TypeScript - TypeScript is a superset of JavaScript that compiles to clean JavaScript output.