5. The Lambda layers improve cold start. No, it does not. It may improve your development/testing time, but the performance will not be better.

Be cautious with memory usage. For example, most of the time, 512 MB is preferable to 256 MB or 128 MB, which results in more CPU credits, faster execution, and potentially lower costs. Increasing memory alone will not always be the most cost-effective solution.

4. The Lambda function is only meant for small tasks. No. The lambda function can run for up to 15 minutes. The max function memory is 10GB. The memory is not just a number but a controller for the performance of a lambda function. When you increase the memory, it also increases the CPU credits.

And in every 10 seconds, Lambda will scale up to another 1000 instances. Note that the first instant 1000 instances are more than enough for most use cases.

3. The Lambda function scaling is instant. No. Lambda has a limit on how fast your functions can scale. Your instant execution environment instance is 1000.

2. The Lambda function scaling is infinite. No. Check your account limits. If you open a new account, you will get 10 concurrent executions by default. You need to request more concurrent executions.

Common Misconceptions about AWS Lambda

1. The Lambda function cold start is free. Soon, Not anymore. Effective August 1, 2025, cold start will be charged (surprised it took this long)

Most AI-powered apps:

> It's different from ChatGPT because it's specially trained on the X dataset

Meanwhile, in the backend

"You're an expert on X..."

Whether you use it or not, seriously stop pasting sensitive data into random websites.

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not if you follow best practices

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thank you! Let me know if there’s any feature that you’d like to see :)

Issues · self-mail-kit/roadmap SelfMailKit public roadmap. Contribute to self-mail-kit/roadmap development by creating an account on GitHub.

This is just the beginning. Many more features are coming.

If you want to request a feature, please use this link

github.com/self-mail-ki...

#10. Of course, dark and light themes are also part of this launch

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