Listen to this Post
Using serverless components on AWS like Lambda and API Gateway offers great flexibility, enabling rapid scaling to handle massive spikes in demand. However, this flexibility can lead to overwhelming backend resources and unexpected costs. To mitigate these risks, you can set limits on AWS Lambda functions and API Gateway requests.
Below are some practical, verified Terraform code snippets to help you configure these limits:
Terraform Code for AWS Lambda Concurrency Limit
[hcl]
resource “aws_lambda_function” “example_lambda” {
function_name = “example_lambda_function”
handler = “index.handler”
runtime = “nodejs14.x”
role = aws_iam_role.lambda_exec.arn
Set concurrency limit
reserved_concurrent_executions = 100
}
resource “aws_iam_role” “lambda_exec” {
name = “lambda_exec_role”
assume_role_policy = jsonencode({
Version = “2012-10-17”
Statement = [
{
Action = “sts:AssumeRole”
Effect = “Allow”
Principal = {
Service = “lambda.amazonaws.com”
}
}
]
})
}
[/hcl]
Terraform Code for API Gateway Throttling
[hcl]
resource “aws_api_gateway_rest_api” “example_api” {
name = “example_api”
}
resource “aws_api_gateway_method_settings” “example_settings” {
rest_api_id = aws_api_gateway_rest_api.example_api.id
stage_name = “prod”
method_path = “/”
settings {
throttling_burst_limit = 100
throttling_rate_limit = 50
}
}
[/hcl]
What Undercode Say
Serverless architectures on AWS, such as Lambda and API Gateway, provide unparalleled scalability and flexibility. However, without proper configuration, they can lead to unexpected costs and resource exhaustion. By implementing concurrency limits on Lambda functions and throttling limits on API Gateway, you can control costs and ensure system stability.
Terraform is an excellent tool for managing these configurations as code, allowing you to version-control and automate your infrastructure. The provided code snippets demonstrate how to set up these limits effectively.
For further reading, explore the following resources:
In addition to AWS-specific commands, here are some general Linux and IT commands that can help you manage your infrastructure:
– Linux Commands:
– top: Monitor system resources.
– netstat -tuln: Check open ports.
– df -h: Display disk usage.
– grep "error" /var/log/syslog: Search for errors in logs.
- Windows Commands:
tasklist: List running processes.netstat -ano: Display network connections.systeminfo: Get system information.
By combining these tools and techniques, you can build a robust, cost-effective serverless architecture that scales efficiently while minimizing risks. Always plan ahead and test your configurations to avoid surprises.
References:
Reported By: Darryl Ruggles – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification ✅
