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40 Redis interview questions you can't miss (including answers and mind maps)

This article shares 40 Redis interview questions with you, including answer analysis and mind maps of Redis knowledge points. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to everyone.

Apr 02, 2021 am 10:34 AM

redis面试题

Notes Introduction, installation and deployment of Redis

Redis is completely open source and free. It is written in C language and complies with the BSD protocol. It is a high-performance (key/value) distributed memory database. It is also a NoSQL database that runs based on memory and supports persistence. It is currently the most popular NoSQL database. One, also known as data structure server. At the same time, Redis is also a simple, efficient, distributed, memory-based caching tool. After the server is constructed, Key-Value caching services are provided through network connections (similar to databases).

Feb 24, 2021 am 09:52 AM

Redis

2019 Java interview questions (Tencent)

Java interview questions and answers: This article shares with you a question from a Tencent interview in 2019. It has certain reference value and I hope it can help you.

Dec 03, 2020 pm 04:33 PM

java 面试题腾讯

When Golang encounters high concurrency instant kill~

Below, the golang tutorial column will introduce to you when Golang encounters high concurrency flash sales. I hope it will be helpful to friends in need! Encountering the GO language is also an occasional opportunity. I am doing architecture-related things at work, and I must pay attention to the new and popular languages. In this way, I entered the world of GO language. GO brought me a brand new experience..

Oct 29, 2020 pm 03:10 PM

Golang

Introduction to Pyzmq

This article is about an introduction to Pyzmq.

Sep 02, 2020 pm 05:19 PM

python Pyzmq

What are some common software architectures?

Common software architecture patterns: layered architecture pattern, client-server pattern, master-slave pattern, pipeline-filter pattern, proxy pattern, point-to-point pattern, event bus pattern, model-view-controller (MVC) pattern, blackboard pattern , interpreter mode, etc.

Aug 28, 2020 pm 03:24 PM

软件架构模式

Detailed explanation of Redis and queues

Below, the Redis tutorial column will explain Redis and queues in detail. I hope it will be helpful to friends in need! Redis can be used not only as a cache server but also as a message queue. Its list type inherently supports use as a message queue. Since the Redis list is implemented using a doubly linked list, the head and tail nodes are saved...

Aug 26, 2020 am 11:51 AM

Redis

How to implement automatic order cancellation in php

How to implement automatic order cancellation in PHP: 1. Scan the database or database scheduled tasks through a thread; 2. Use Redis; 3. Delay the queue through JDK; 4. Use RabbitMQ ActiveMQ JMS to determine whether the order has timed out, and send the message if the time is exceeded. delete.

Aug 12, 2020 am 09:32 AM

php

Share common Redis interview questions

Redis is an open source non-relational database written in ANSI C language, complies with the BSD protocol, supports network, can be memory-based and persistent log-type, Key-Value database, and provides APIs in multiple languages.

Jul 25, 2020 pm 01:35 PM

Redis面试题

15 PHP interview questions about high concurrency (summary)

This article shares some interview questions about high concurrency in PHP. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to everyone.

Jul 20, 2020 pm 05:13 PM

PHP 高并发面试题

How does Redis implement delay queue? Method introduction

Delay queue, as the name suggests, is a message queue with delay function. So, under what circumstances do I need such a queue? 1. Background Let’s first look at the following business scenarios: when an order has been in an unpaid status, how to close the order in a timely manner, how to regularly check whether the order in the refund status has been refunded successfully, and the order does not receive the status of the downstream system for a long time. When notifying, how to implement a step-by-step strategy for synchronizing order status? When the system notifies the upstream system of the final status of successful payment, the upstream system returns a notification failure. How to perform asynchronous notifications and implement frequency-divided sending:..._redis implements delayed confrontation

Jul 08, 2020 pm 04:01 PM

redis 延迟队列

What is the difference between activemq and rabbitmq?

The difference between activemq and rabbitmq is: 1. activemq is an old message queue, written in Java language, has the best support for JMS, and uses multi-thread concurrency; 2. rabbitmq is the leading implementation of the AMQP protocol, supporting multiple scenarios, Taobao's MySQL It is used for communication within the cluster.

Jul 02, 2020 am 11:40 AM

activemq rabbitmq

How to confirm with message in springboot + rabbitmq

This time I share how [springboot + rabbitmq] implements the message confirmation mechanism, and some pitfall experience in actual development. In fact, the overall content is relatively simple. Sometimes things are so magical. The simpler things are, the easier they are. Something went wrong.

Jul 01, 2020 pm 05:35 PM

java springboot rabbitmq

What are message queues?

Message queues include: 1. RabbitMQ, which is a reusable enterprise messaging system based on AMQP and is one of the most mainstream message middlewares currently; 2. ActiveMQ, which fully supports JMS1.1 and J2EE1. 4 standard [JMS Provider] implementation.

Jun 29, 2020 am 11:30 AM

消息队列