并发(concurrency)就是在任意指定时间,Lambda函数正在处理的请求数量,或者说正在运行的实例(执行环境)的数量。 一个AWS account中所有Lambda函数的总的并发数量是有限的,具体数量与Account所在的Region有关。 我们可以为一个函数保留一定并发量,但当一个函数保留一定并发量(即设定了reserved concurrency),那么其它函数可以...
我们把provisioned concurrency(预配置并发)设定为“1”,但是从日志可以看到Lambda服务启动了两个执行环境,但是在测试有两个并发调用的情况下,只有其中一个执行环境参与了函数调用,对于并发的第二个函数调用是在一个新的执行环境中运行的。 为什么配置为“1”并启动了两个实例,实际调用时又只在其中一个上运行? 过了...
您可以使用 Lambda 控制台或 Lambda API 为函数配置预留并发设置。 为函数预留并发(控制台) 打开Lamba 控制台的函数页面。 选择要为其预留并发的函数。 选择Configuration(配置),然后选择 Concurrency(并发)。 在并发下,选择编辑。 选择预留并发。输入要为该函数预留的并发数量。 选择Save(保存)。 您最多可以预留的...
aws lambda put-function-concurrency--function-namemy-function\ --reserved-concurrent-executions100 You should see output that looks like the following: {"ReservedConcurrentExecutions":100} Accurately estimating required reserved concurrency for a function ...
One of the distinctive architectural properties of AWS Lambda is that many instances of the same function, or of different functions from the same AWS account, can be executed concurrently. Moreover, the concurrency can vary according to the time of day or the day of the week, and such vari...
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...
在使用Lambda之前,大家经常会顾虑的一个问题就是Lambda的冷启动的问题,本文将从Lambda内部结构以及Lambda的执行过程出发,首先介绍冷启动产生的原因以及发生的环节,进一步介绍Lambda预配置并发如何来解决冷启动的问题以及如何配置,最后通过一个例子延时启动预配置并发前后的区别。
The Lambda service throttles new invocations while the first request is in progress. You invoke the function in quick succession from the command line to simulate throttling and observe the retry behavior: Set the function reserved concurrency to 1 by updating the AWS SAM template. ...
多种触发方式：Lambda函数可以通过API调用触发，也可以通过AWS内部的各种事件触发，如S3存储桶事件、DynamoDB流事件等。Auto Scaling与并发支持：在Auto Scaling组中定义触发器，Lambda函数支持provisioned concurrency和异步处理，确保在高并发场景下也能稳定运行。自定义事件源映射：用户可以自定义event source ...
# Override the Lambda function name name: ${sls:stage}-lambdaName description: My function # Processor architecture: 'x86_64' or 'arm64' via Graviton2 (default: x86_64) architecture: x86_64 # Reserve a maximum number of concurrent instances (default: account limit) reservedConcurrency: 5 #...