Tag：Current limiting
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Time：2021-10-14
Hello, I’m yes. Today, let’s talk about current limiting, including common current limiting algorithms, single machine current limiting scenarios, distributed current limiting scenarios and some common current limiting components. Of course, we must be clear before introducing the current limiting algorithm and specific scenariosWhat is current limiting and why?。 Any technology must find out its […]
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Time：2021-10-12
1. Each issue of this series of articles will solve a practical redis problem2. Questions in each issue will be selected from the comments in each issue3. Questions are limited to those related to redis. If I am interested in other questions, I will not rule out opening up a new series4. I often use […]
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Time：2021-10-12
1. What is service flow restriction? With the development of microservices and distributed systems, the mutual invocation between services is becoming more and more complex. In order to ensure the stability and high availability of their own services, certain flow limiting measures should be taken when facing requests that exceed their own service capabilities. Just […]
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Time：2021-10-3
Daily Operation TroubleshootingHow can there be less didi open sourceDidi open source logikm one-stop Kafka monitoring and control platform This article comes from a group friend’s question, and then wrote this article Group plus V: jjdlmn_ Kafka column sorting address, please stamp here 0.0 First define the noun: broker before migration:OriginBrokerCopy after migrationTargetBroker premise Before […]
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Time：2021-9-24
Hello, I’m a side dish.A hope can becomeTalking about architecture with ox xMy man! If you want to be the person I want to be, or pay attention and be a partner, so that the dishes are no longer lonely! This paper mainly introducesService current limiting If necessary, refer to If it helps, don’t forgetgive […]
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Time：2021-9-18
CountDownLatch Subtraction counter import java.util.concurrent.CountDownLatch; //Counter public class CountDownLatchDemo { public static void main(String[] args) throws InterruptedException { //The total number is 6. It can be used when the task must be performed CountDownLatch countDownLatch = new CountDownLatch(6); for (int i = 0; i < 6; i++) { new Thread(()->{ System.out.println(Thread.currentThread().getName()+” Go out”); countDownLatch.countDown(); },String.valueOf(i)).start(); […]
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Time：2021-9-16
Data stack is a cloud native one-stop data platform PAAS. We have an interesting open source project on GitHub and gitee: flinkx. Flinkx is a unified data synchronization tool for batch flow based on Flink. It can collect both static data and real-time changing data. It is a data synchronization engine integrating global, heterogeneous and […]
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Time：2021-8-31
Author: Jiusi Hello, I’m Jiusi, from the front-end technology department of Tencent, and I’m good at front-end monitoring and engineering related technologies. This article will focus on front-end performance optimizationmonitorDiscuss the problem. Has the final say that computer has the final say has the final say, not the test of the speed of the computer […]
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Time：2021-8-28
Only from the aspects of design optimization, service splitting and automatic capacity expansion can sometimes not completely solve the problem. For example, sometimes the traffic grows too fast and the capacity expansion process is not completed yet, the server may not be able to resist it Since we can’t predict sudden traffic and the business […]
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Time：2021-8-21
background I’ve written an article on seckill system before, but there are some defects, so I’m going to make a second creation on the basis of the previous one, but the reason why I’m determined to create seckill system is that I’ve interviewed many readers recently. It’s seckill system that blinds me. What I’m confused […]
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Time：2021-8-14
There are three ways to implement redis current limiting: 1. Based on the operation of redis setnx, the expiration practice is set for the specified key; 2. Based on the data structure Zset of redis, the request is created into a Zset array; 3. Redis based token bucket algorithm requires current limiting when the output […]
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Time：2021-8-14
1、 Problem background Recently, the CPU coverage of the company’s recent online servers is often too high, which affects the response timeout of some applications, resulting in a large number of SMS and email alarms. After checking the database log and access.log, it is found that the API interface is brushed and maliciously and madly […]
