{"id":907,"date":"2020-01-22T12:32:20","date_gmt":"2020-01-22T12:32:20","guid":{"rendered":"https:\/\/www.easydeploy.io\/blog\/?p=907"},"modified":"2020-01-22T12:32:20","modified_gmt":"2020-01-22T12:32:20","slug":"aws-lambda-best-practices","status":"publish","type":"post","link":"https:\/\/www.easydeploy.io\/blog\/aws-lambda-best-practices\/","title":{"rendered":"AWS Lambda Best Practices to Take into Account"},"content":{"rendered":"

Dive deep and learn some of the top <\/span>AWS lambda best practices!<\/span><\/em><\/p>\n

AWS Lambda<\/a> is an advanced computing service that lets the developers or users initiate coding without managing the servers. The best thing about this is, it will initiate the code when required and will automatically scale it. You can even use it to run the codes in response to specific events. For example, change to Amazon S3 bucket and DynamoDB table, in response to different HTTP requests through API Gateways and more.<\/span><\/p>\n

So, it can be said that with the best <\/span>AWS lambda pricing<\/span>, it also comes with many benefits that make it effective. It is thoroughly scalable, yet quite simplistic and budget-friendly at the same time. If you are using this for the first time, then don\u2019t worry at all. Here, we have listed down some common <\/span>AWS lambda best practice<\/span>s that can help you in this. So, let\u2019s get started with it.\u00a0<\/span><\/p>\n

AWS Lambda is one of the top AWS services. Check out this list of top AWS Services<\/a> for 2020.<\/p><\/blockquote>\n

List of AWS Lambda Best Practices\u00a0<\/span><\/h2>\n

Remember that, AWS Lambda is not an AI robot. That means it can\u2019t learn by itself and can\u2019t optimize the configuration for best performance. That\u2019s why, as a developer, you should work carefully when designing. Besides, you need to know the methods to keep the performance and cost at a balanced level. <\/span><\/p>\n

If you are thinking about how then go through the articles carefully, and you will get to know the best practices to use AWS Lambda at its best. Keep reading to explore the practices. <\/span><\/p>\n

1. AWS Lambda environment variables<\/span><\/h3>\n

Remember that variables of the AWS environment are just like the variables of the system environment. You can easily use it in your script during the run time. So, you can utilize the variable of AWS Lambada to define different variables. For example, RDS, S3 buckets, and also application keys. <\/span><\/p>\n

With this practice, you can easily copy the script and use it on other functions or cases. One of the significant\u00a0<\/span>AWS lambda best practices<\/span>\u00a0is its ability to control the reliance on function deployment units. So, remember this practice to use the Lambda in the best way. <\/span><\/p>\n

2. Maximum availability<\/span><\/h3>\n

When you activate a Lambda, it functions through a VPC. The VPC comes with internet access. But it doesn\u2019t have access to other VPCs. Besides, it can only access DynamoDB and S3. It will not get access to others like Elasticsearch, RDS, and more. <\/span><\/p>\n

But in some cases, you may need nee to access RDS and some other resources. In such a case, there are two crucial things that you can do: <\/span><\/p>\n

    \n
  1. You can design the AWS Lambda function for maximum availability. For this, all you need to select different subnets located in AZs. <\/span><\/li>\n
  2. Make sure that other Availability Zones have enough IP addresses. So, when one goes down, you can utilize others to handle the request.<\/span><\/li>\n<\/ol>\n

    Also Read:\u00a0How to Setup RDS Auto Scaling in AWS<\/a><\/p><\/blockquote>\n

    3. Stateless<\/span><\/h3>\n

    For better performance, you need to need to keep the Lambda functions stateless. By doing this, you can let AWS Lambda initiate function\u2019s copies based on the requirements. Besides, this will also enhance the Lambda\u2019s scalability. Even though there are stateless programming models, you can use the code to get access to other data. This will make sure that the compute infrastructure and the code are not connected.<\/span><\/p>\n

    4. Concurrency<\/span><\/h3>\n

    Some developers think that AWS Lambda can handle the scalability. So why they need to consider this? Well, you need to consider this as, like others, AWS Lambda also comes with some limits on its concurrency execution. <\/span><\/p>\n