dwyl/learn-aws-lambda

How do we simulate "Real Time" interaction without WebSockets ?

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#32 创建于 2016年1月28日

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 (3 评论) (0 反应) (0 负责人)JavaScript (1,037 star) (206 fork)batch import
help wantedquestion

描述

WebSockets allow us to stream additional data from/to client/server beyond the limits of http request/response. This has opened a world of Real Time apps. Given that keeping Lambda functions running for long time will cost a lot (because we are billed per 100ms) we need to consider an alternative approach for sending data to the client after the initial page/data is rendered...

_Polling_?

http://stackoverflow.com/questions/12555043/my-understanding-of-http-polling-long-polling-http-streaming-and-websockets

贡献者指南

技术栈
awsjavascriptnodejs
领域
backendcloudapi
议题类型
research
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-3 hours
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
HTTP basicsLambda billing modelreal time web patterns
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
50
研究方向
Investigate the trade offs between polling, long polling, and HTTP streaming approaches for real time interaction with AWS Lambda. Consider Lambda's stateless execution model and billing by 100ms increments. Provide a comparison that highlights when each method is appropriate and any AWS services (like API Gateway, DynamoDB streams, or CloudWatch events) that could be used to implement real time behavior.