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Hardware test memtest86+ stress smartmontools sysstat hdparm vnstat nload mpstat -P ALL 1 iostat -x 1 nload Reference

mongodb db.serverStatus().connections dt.serverStatus().locks; rs.printReplicationInfo(); rs.printSlaveReplicationInfo(); rs.printSecondaryReplicationInfo(); db.currentOp({ “waitingForLock”: true }); db.setProfilingLevel(1, 50) db.system.profile.find().sort({ ts: -1 }).limit(5).pretty() db.mycollection.find({ field: value }).explain(“executio...

CentOS EOL mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup sudo curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo sudo yum install iperf3 Reference

FastAPI profiler - args: - --reduced-profile - --profile-interval - "300" - --outfile - profile_report.txt - runfastapi.py command: - scalene env: Reference plasma-umass/scalene benfred/py-spy

Web test Selenium: Selenium is widely used for browser automation and can handle complex interactions with dashboards and filters. It supports many languages (like Python, JavaScript, and Java) and integrates well with test frameworks like Pytest or JUnit. Playwright: This is a modern, powerful framework by Microsoft for end-to-end testing. Pl...

build aws lambda function Reference Deploy Python Lambda functions with container images

mongodb stop old openration 当客户端断开连接时, 如果是aggregations 和 find操作, 则会自动停止该操作; 如果是写操作, 那么会继续执行; 见https://www.mongodb.com/docs/drivers/node/current/faq/#what-happens-to-running-operations-if-the-client-disconnects- 如果是前端取消操作, 或者重新开始新的操作在FastAPI中, 不会中止之前的操作, 所以不会中止之前的MongoDB操作; 手动停止MongoDB操作 使用db.currentOp()方法可以查看当前正在执行的MongoDB操作; 使用db.kill...