Remove concurrency on Lambda (was useful when Lambda were triggered v…

…ia Cloudwatch log subscriptions, not Step Functions)

README.md

@@ -23,7 +23,6 @@ module "ja3fingerprint_blacklist" {
   threshold_alarm             = 30 // As soon as this threshold is crossed, we'll trigger the workflow
   threshold_per_ja3           = 10 // Ja3Finder uses this to block only Ja3FingerPrints that were blocked multiple times.
   log_group_name              = "aws-waf-logs-myacl" // name of the log group which ja3Finder will query
-  lambda_concurrency          = 1 // Prevents 429s fur WAFv2 APIs. See WAF quotas for limit 
   rule_group_scope            = "CLOUDFRONT"
   rule_group_maxsize          = 30 // WAF consumed capacity will be 3x that amount. 
   ja3_ban_duration_in_seconds = 3600 // How long before we unban Ja3FingerPrints

main.tf

@@ -37,7 +37,6 @@ resource "aws_lambda_function" "ja3_finder" {
   runtime                        = "python3.12"
   handler                        = "ja3Finder.lambda_handler"
   timeout                        = 240
-  reserved_concurrent_executions = var.lambda_concurrency
 
   environment {
     variables = {
@@ -62,7 +61,6 @@ resource "aws_lambda_function" "ja3_rulegroup_updater" {
   runtime                        = "python3.12"
   handler                        = "ja3RuleGroupUpdater.lambda_handler"
   timeout                        = 60
-  reserved_concurrent_executions = var.lambda_concurrency
 
   environment {
     variables = {

variables.tf

@@ -96,10 +96,4 @@ variable "sampled_requests_enabled" {
   type        = bool
   description = "Whether to enable sampled requests logging"
   default     = false
-}
-
-variable "lambda_concurrency" {
-  type        = number
-  description = "The amount of reserved concurrency for the Lambda function. If you don't set this you might hit throttling errors on WAF GetRuleGroup API "
-  default     = -1
 }