https://github.com/mununki/lambda-warmer

A lambda function to warm another lambda function
https://github.com/mununki/lambda-warmer

Last synced: 10 days ago
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A lambda function to warm another lambda function

• Host: GitHub
• URL: https://github.com/mununki/lambda-warmer
• Owner: mununki
• Created: 2019-04-11T14:31:42.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2019-04-11T14:45:25.000Z (over 5 years ago)
• Last Synced: 2024-04-24T03:22:04.505Z (8 months ago)
• Language: JavaScript
• Size: 2.93 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Lambda Warmer

_The related post: https://moondaddi.dev/post/2019-03-23-how-to-warm-lambda-function/_

This is a lambda function to warm another lambda function in AWS. Especially, this is to solve a cold start issue for **the web app which is deployed on AWS lambda.**

## Usage

### Requirements

- [serverless](https://serverless.com/) is required.

### Deployment

- Clone this repo.

```shell

$ git clone https://github.com/mattdamon108/lambda-warmer.git

```

- Rename `serverless.template.yml` to `serverless.yml` and configure it with your IAM profile.

```shell

$ mv serverless.template.yml serverless.yml

```

```yml

service: lambda-warmer

provider:

  name: aws

  runtime: nodejs8.10

  stage: dev

  region: ap-northeast-2 # Edit the region

  profile: your-profile # Edit here with your AWS IAM profile

  memorySize: 128

  timeout: 15s

functions:

  warmer:

    handler: handler.warmer

    events:

      - schedule: rate(5 minutes)

```

> Your IAM profile needs to be stored in `~/.aws/credentials` with proper permissions to create a lambda function through AWS cloudformation.

- Set the target URL

```js

// handler.js

module.exports.warmer = async (event, context, callback) => {

  try {

    await warming("https://www.rate-link.com/rates"); // change your target URL

    context.succeed();

  } catch (e) {

    context.done();

  }

};

```

- Deploy

```shell

$ sls deploy

```