原文:http://blogs.vmware.com/vfabric/2013/04/how-instagram-feeds-work-celery-and-rabbitmq.html Instagram is one of the poster children for social media site successes. Founded in 2010, the photo sharing site now supports upwards of 90 million active ph…
写好celery任务文件,使用celery -A app worker --loglevel=info启动时,报告如下错误: [2019-01-29 01:19:26,680: ERROR/MainProcess] consumer: Cannot connect to amqp://sunlight:**@127.0.0.1:5672/celery: [Errno 104] Connection reset by peer.Trying again in 4.00 seconds... 检查了…
首先,记录下遇到的问题吧,在抓取的过程中为了避免IO操作,主要用Redis做插入缓存,当内存占用率很大时,会周期性的持续到Mysql里 虽然是拆东墙补西墙,但把数据抓取完毕后持续化可以慢慢进行,毕竟数据已经保存到内存里了,但问题来了,由于Redis的内存管理机制 并不会在数据删除后立即释放内存,使得将数据删除后Redis的内存占用率还是很高,这里引出官方说明,希望能说明些情况: Redis will not always free up (return) memory to the OS whe…
原文:Scaling Pinterest - From 0 To 10s Of Billions Of Page Views A Month In Two Years 译文:两年内从零到每月十亿 PV 的发展来谈 Pinterest 的架构设计 Pinterest正经历了指数级曲线般的增长,每隔一个半月翻翻.在这两年里,Pinterest,从 每月PV量0增长到10亿,从两名成立者和一个工程师成长为四十个工程师,从一台MySQL 服务器增长到180台Web 服务器(Web Engine),240…
airflow 1.10.0 官方:http://airflow.apache.org/ 一 简介 Airflow is a platform to programmatically author, schedule and monitor workflows. Use airflow to author workflows as directed acyclic graphs (DAGs) of tasks. The airflow scheduler executes your tasks…