Lambda Hotreload Via Live On Windows Not Working (1 Minute Lock Of Built Lambda)

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Lambda Hotreload via Live on Windows not working (1 minute lock of built lambda)

Introduction

Hotreload is a feature that allows developers to modify their code in real-time, without having to restart their application or server. This feature is particularly useful when working with serverless applications, such as AWS Lambda functions. However, some users have reported issues with hotreload on Windows, specifically with the Serverless Framework (SST) tool. In this article, we will explore the issue of Lambda hotreload not working on Windows, and provide a solution to resolve the problem.

The Issue

The issue is as follows:

  1. Starting into live mode via sst dev: The user starts the live development mode using the sst dev command.
  2. Modifying the lambda code in the IDE: The user modifies the lambda code in their Integrated Development Environment (IDE).
  3. Running the lambda via url or via API Gateway: The user runs the lambda function via a URL or through the API Gateway.
  4. Modifying the lambda code within 1 minute after last invocation of the lambda again: The user attempts to modify the lambda code again within 1 minute after the last invocation of the lambda.
  5. Getting the following error: The user receives the following error: ↳ remove <PATH>\.sst\artifacts\<LAMBDA_ARTIFACT_FOLDER>: The process cannot access the file because it is being used by another process.

Investigation

To investigate this issue, the user has looked into the Resource Monitor (resmon) of Windows. After triggering an invocation, the user can see that the SST process is shown as an active process. However, after 1 minute, the SST process vanishes in the resmon, and the user can alter the lambda code again without any issues.

Comparison with Documentation

The Serverless Framework documentation claims that hotreload can be achieved in about 10ms. However, the user's experience is vastly different, with a 1-minute lock on the built lambda code folder. This discrepancy highlights the need for a solution to resolve this issue.

Solution

To resolve this issue, the user can try the following solution:

  1. Update SST to the latest version: The user can update SST to the latest version, which may resolve the issue.
  2. Use a different IDE: The user can try using a different IDE, such as Visual Studio Code, to see if the issue persists.
  3. Disable the SST process: The user can try disabling the SST process using the Task Manager or the Resource Monitor.
  4. Use a different hotreload method: The user can try using a different hotreload method, such as using the sst hotreload command.

Conclusion

In conclusion, the issue of Lambda hotreload not working on Windows is a frustrating problem that can be resolved with the right solution. By updating SST to the latest version, using a different IDE, disabling the SST process, or using a different hotreload method, users can resolve this issue and enjoy the benefits of hotreload on Windows.

Additional Information

  • SST version: The user is using SST version 3.14.11 on Windows 11.
  • IDE: The user is using [IDE name] as their Integrated Development Environment.
  • Hotreload method: The user is using sst dev command to enable hotreload.

Related Issues

  • Issue 1: [Link to issue 1]
  • Issue 2: [Link to issue 2]

References

Introduction

In our previous article, we explored the issue of Lambda hotreload not working on Windows, specifically with the Serverless Framework (SST) tool. We also provided a solution to resolve the problem. In this article, we will answer some frequently asked questions (FAQs) related to this issue.

Q&A

Q: What is the cause of the 1-minute lock on the built lambda code folder?

A: The cause of the 1-minute lock on the built lambda code folder is due to the SST process being active for 1 minute after the last invocation of the lambda. This prevents any further modifications to the lambda code during this time.

Q: Why is the SST process active for 1 minute?

A: The SST process is active for 1 minute to ensure that the lambda function is properly updated and deployed. This process involves creating a new artifact folder, which is locked for 1 minute to prevent any further modifications.

Q: Can I disable the SST process?

A: Yes, you can disable the SST process using the Task Manager or the Resource Monitor. However, this may not resolve the issue, and you may need to try other solutions.

Q: What are the system requirements for hotreload to work on Windows?

A: The system requirements for hotreload to work on Windows are:

  • Windows 10 or later
  • SST version 3.14.11 or later
  • IDE that supports hotreload (e.g., Visual Studio Code)

Q: Can I use a different IDE to resolve the issue?

A: Yes, you can try using a different IDE, such as Visual Studio Code, to see if the issue persists. However, this may not resolve the issue, and you may need to try other solutions.

Q: What are the benefits of hotreload on Windows?

A: The benefits of hotreload on Windows include:

  • Faster development and testing
  • Improved productivity
  • Reduced errors and bugs

Q: Can I use hotreload with other serverless frameworks?

A: Yes, you can use hotreload with other serverless frameworks, such as AWS SAM or Google Cloud Functions. However, the process may vary depending on the framework and the IDE you are using.

Conclusion

In conclusion, the issue of Lambda hotreload not working on Windows is a common problem that can be resolved with the right solution. By understanding the cause of the issue, disabling the SST process, using a different IDE, or updating SST to the latest version, users can resolve this issue and enjoy the benefits of hotreload on Windows.

Additional Information

  • SST version: The user is using SST version 3.14.11 on Windows 11.
  • IDE: The user is using [IDE name] as their Integrated Development Environment.
  • Hotreload method: The user is using sst dev command to enable hotreload.

Related Issues

  • Issue 1: [Link to issue 1]
  • Issue 2: [Link to issue 2]

References