Tag:pressure

  • About Driver Verifier in Windows 10

    Time:2022-8-8

    Driver Verifier is a Windows 10 built-in diagnostic tool designed to verify native Microsoft drivers and third-party drivers. Driver Verifier's verification process involves putting a lot of pressure on drivers to fail bad, outdated, incompatible, or misbehaving drivers. For a driver that fails this detection, the desired result is a BSOD (Blue Screen of Death), […]

  • Simple use of Tsung

    Time:2022-7-3

    The main difference between Tsung and JMeter in stress testing is that the way of concurrent contracting is different. Tsung is multi-process contracting and JMeter is multi-threaded contracting. It is relatively simple for Tsung to simulate massive concurrent requests. Therefore, in view of the pressure test of nginx not long ago, it was convenient to […]

  • Quantitative performance test of nginx and gunicorn

    Time:2022-4-28

    preface NginxFamous, no one in the world knows you, so you don’t have to introduce it. It’s known as a million level connection. Gunicorn, Pythonwsgi server。 It is an important part of Python web ecology, which is equivalent to that under Javatomcat。💪💪💪 Today, let’s take a quantitative look at the specific values of RPS of […]

  • Talk about the difference between redis cache penetration and cache breakdown, avalanche effect

    Time:2022-3-19

    Interview experience For a long time, I thought that cache breakdown and cache penetration were the same thing. Until recently, when I went to Tencent for an interview, the interviewer asked me the difference between cache breakdown and penetration; When I answered that they were the same, the interviewer immediately raised his head, stared at […]

  • How to generate the primary key in distributed system

    Time:2021-7-3

    The evolution of databaseWhen the pressure bottleneck of the database comes, we can share the pressure of the database by sub database and sub table. In the case of sub database and sub table, how to set the primary key? Database primary key self growth Under normal circumstances, if every database grows by itself, there […]

  • Design a high concurrency and high availability IP query HTTP service based on flash

    Time:2021-6-21

    Structural design The infrastructure is Flash + gunicorn + load balancing, which is divided into alicloud hardware load balancing service and software load nginx. Gunicorn uses supervisor for management. Using nginx software load structure diagram Structure diagram of using alicloud hardware load balancing service Because flash app needs to store IP tree and dictionary related […]

  • Gaode full link pressure measurement — construction practice of precise pressure control

    Time:2021-2-3

    Introduction:This paper will focus on the construction practice of Gaode testpg pressure measurement platform in the accurate regulation of pressure generating capacity. Reading guideAs a national level travel and life service platform, the stability of Gaode service is very important whether in peacetime or holidays. Once the stability of service goes wrong, it may affect […]

  • Kubernetes: ab based stress testing

    Time:2020-11-21

    Pressure test based on ab # cat apache-test.yaml ########################################################################## #Author: zisefeizhu #QQ: 2********0 #Date: 2020-08-03 #FileName: apache-test.yaml #URL: https://www.cnblogs.com/zisefeizhu/ #Description: The test script #Copyright (C): 2020 All rights reserved ########################################################################### kind: Deployment apiVersion: extensions/v1beta1 metadata: name: apache namespace: default labels: name: apache spec: #Replicas: the number of pods from 3 selector: matchLabels: name: apache template: […]

  • Memory limitation of pod and oom killer

    Time:2020-11-17

    Over the past few days, some of my pods have been panic, and OS syslog shows that oom killers have killed the container process. I did some research to find out how these things work. Pod memory limit and CGroup memory setting Create a pod with the memory limit set to 128mi: kubectl run –restart=Never […]

  • Introduction and overview of NoSQL in redis (1)

    Time:2020-8-28

    1. Why NoSQL?  NoSQL is a non relational databaseNoSQL, also known as the abbreviation of not only SQL, is a general term for database management systems different from traditional relational databases。NoSQLStorage for very large scale data。 These types ofData storage does not require a fixed patternWithout unnecessary operation, it can be expanded horizontally 1.1 the […]

  • Apache bench (AB) tool testing Web Performance Stress

    Time:2020-3-14

    Website performance stress testing is an essential part of the performance tuning process. Only when the server is under high pressure can it really reflect the problems exposed by various settings. There is a self-contained program called AB in Apache, which can perform site access stress test on Apache or other types of servers. Apache […]

  • How to realize load balancing and how to implement nginx

    Time:2019-12-9

    What is nginix? Nginx is an HTTP server. It is a high-performance HTTP server / reverse proxy server and email (IMAP / POP3) proxy server developed in C language. Nginx can support 50000 concurrent links, but the consumption of CPU, memory and other resources is very low, and the operation is very stable. Users of […]