dwyl/learn-aws-lambda

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

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#32 建立於 2016年1月28日

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 (3 留言) (0 反應) (0 負責人)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

貢獻者指南

技術棧
awsjavascriptnodejs
領域
backendcloudapi
議題類型
research
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-3 hours
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
HTTP basicsLambda billing modelreal time web patterns
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
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.