本文承接《AWS Lambda provisioned concurrency预配置并发 上篇》一文,测试provisioned concurrency(预配置并发)。 本文会在WSL环境中使用AWS CLI来触发Lambda函数。有关AWS CLI的配置可以参考《AWS CLI SSL: CERTIFICATE_VERIFY_FAILED 错误分析与解决》一文。 目录 - 实战步骤 2. 修改Lambda函数 - 修改timeout参数 ...
Lambda provisioned concurrency预配置并发 我们知道Lambda函数有两种控制并发(concurrency)的方法 reserved concurrency:预留并发,保证Lambda函数可以使用的最大并发数(也就是instances数量)。当一个函数设置了reserved concurrency,那么其它函数就不可以占用被保留的concurrency,即其它函数可使用的并发数就会相应减少。函数配置res...
This topic explains concurrency concepts and function scaling in Lambda. By the end of this topic, you'll be able to understand how to calculate concurrency, visualize the two main concurrency control options (reserved and provisioned), estimate appropriate concurrency control settings, and view metr...
ProvisionedConcurrencyInvocations - Lambda 使用佈建並行調用函數程式碼的次數。Lambda 會針對已設定佈建並行的每個函數版本和別名發出此指標。使用 SUM 檢視此指標。 ProvisionedConcurrencyInvocations 與ProvisionedConcurrentExecutions 不同,ProvisionedConcurrencyInvocations 計算調用總數,ProvisionedConcurrentExecutions 則計算...
Serverless的特性决定了实例无法避免冷启动。Lambda支持同步和异步两种调用模式,以项目经验来看,同步调用模式受冷启动影响更大,有时会通过SQS将调用封装成异步模式。在Serverless工具中甚至提供了Serverless WarmUp Plugin插件,通过定时调用避免冷启动。AWS也提供了Provisioned Concurrency特性来维持热实例,减少冷启动的次数。
减少预热时间：lambda snapstart 对比provision concurrency Lambda SnapStart 和 预置并发 (Provisioned Concurrency) 都是 AWS Lambda 的功能，可以帮助减少冷启动时间并提高应用程序性能。但是，它们有不同的方法和权衡。Lambda SnapStart 是一种性能优化，它在您发布 Lambda 函数的新版本时会对初始化的执行环境进行...
Provisioned Concurrency incurs additional costs, so it is cost-efficient to use it only when necessary. For example, early in the morning when activity starts, or to handle recurring peak usage. Example application As an example, we use a serverless ecommerce platform with multipl...
AWS Lambda での Provisioned Concurrency がAWS GovCloud (米国) リージョン内でご利用いただけるようになりました。 Provisioned Concurrency は、あらゆる規模のサーバーレスアプリケーションのパフォーマンスをより強力に制御するための機能です。Provisioned Concurrency を使用する関数は、起動時での...
Functions are initiated by provisioned Concurrency which is the reason for higher rates in Lambda so that they can handle requests more quickly. The cost is dependent on the functional memory and the consumption during execution time. A similar feature is also offered by Azure function in its pr...
The Provisioned Concurrency configuration initializes a dedicated number of concurrent executions, eliminating the cold start for each execution. This is an important consideration when planning for performance. The SnapStart feature is also an option that accelerates a function's initialization period. ...