ysugimoto/aws-lambda-image

slow performance

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#82 创建于 2017年1月6日

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 (7 评论) (0 反应) (1 负责人)JavaScript (826 star) (225 fork)batch import
enhancementhelp wanted

描述

Hi, I am seeing quite alow performance in resizing pictures, is it normal?

Resizing FullHD image to 2 sizes takes almost 7 seconds. Is this a normal behaviour? Thank you.

image

贡献者指南

技术栈
javascriptaws
领域
backendcloudperformance
议题类型
performance
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。
mostly clear
前置要求
Basic understanding of AWS LambdaNode.js knowledgeImage processing concepts
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。
20
研究方向
Review the image resizing logic in the aws lambda image repository. Look at the main Lambda function code in index.js. Check the comments on issue #82 for any profiling insights. Profile the current implementation to identify bottlenecks, such as the image processing library used (likely sharp or gm). Consider if the latency is due to cold starts or actual processing time. Suggest optimizations like using smaller image formats or caching.