A Redis production accident cost the company millions

1, Antecedents There is a core project of the company. The client of redis has always used jedis. Later, the technical director asked to replace the jedis client with a more efficient lettuce client, and use the RedisTemplate class of spring framework to operate redis. However, the world is unpredictable. It is such a simple demand that makes ...

Added by HAVOCWIZARD on Thu, 10 Mar 2022 14:48:00 +0200

Still using RedisTemplate? Try Redis's official ORM framework. It's elegant enough to use

Previously, in the SpringBoot project, I have been using RedisTemplate to operate the data in Redis, which is also the way officially supported by Spring. Compared with Spring Data's support for MongoDB and ES, this way of using Template is really not elegant! Recently, RedisOM, Redis's exclusive ORM framework, has been officially launched by R ...

Added by JustFoo on Thu, 10 Mar 2022 07:49:55 +0200

Golang interface {}

prefaceThis article will mainly introduce the interface {} in golang and unlock its mysterious veil. Before introducing it, we need to understand the type system of golang, and then introduce the use of interface, the underlying principle of interface and the principle of interface in reflectionType systemThe built-in types of Golang include in ...

Added by enemeth on Tue, 08 Mar 2022 15:11:37 +0200

[daily question brushing 3.7] 10 algorithms + 10 interviews - ah V

In the new week, come on ~, make progress a little every day ~. Algorithm problem (Niuke network) 1. Fibonacci sequence The Fibonacci sequence starts with the third term and is equal to the sum of the first two terms. Code details: class Solution { public: int Fibonacci(int n) { vector<int> dp(n + 1); dp[ ...

Added by Ice on Mon, 07 Mar 2022 18:07:16 +0200

A little advice for the younger generation, finishing the facial classics with tears

preface Large factory interview has always been a favorite topic in the programmer circle during fishing time. Entering a large factory must also be the dream of countless programmers. The question about "principle" is almost a necessary question for Android developers nowadays, especially in large factory interviews. Small partners ...

Added by JoeBuntu on Mon, 07 Mar 2022 16:18:20 +0200

3 minutes, learn a little knowledge of Lambda

♥ Previous remarks Remember the little knowledge of Lambda introduced to you before? Today, let's introduce the key points of flow API. Stream API Stream is the key abstract concept of dealing with collections in Java 8. It can specify your of collections and perform data operations such as finding, filtering and mapping. Stream us ...

Added by nivek9991 on Sat, 05 Mar 2022 09:48:48 +0200

Continuous integration interface automation - jmeter+ant+jenkins and HTML report extension

ant batch execute Jmeter 1, Environmental preparation 1. JDK environment: Java Downloads | Oracle 2. ANT environment: Apache Ant - Binary Distributions 3,Jmeter: Apache JMeter - Download Apache JMeter 4. Add ant-jmeter-1.1.1. To the extras directory of JMeter Copy the jar package to the lib directory under the ant installation directory 5 ...

Added by sunnyside on Fri, 04 Mar 2022 19:37:54 +0200

Dry goods! Teach you to use Python GUI framework to generate image extractor! WORD, PDF can use it!

preface: Hello, everyone. Today I'll teach you to do a comprehensive Python practice: extracting pictures in PDF and Word with Python To realize today's theme, we have to first involve a very common framework content GUI in Python. We have also talked about some development cases involving python GUI framework in our articles before; This ...

Added by daucoin on Fri, 04 Mar 2022 09:34:08 +0200

How to use Java to track JVM file system access

Use a custom security manager as a low overhead alternative to native tracers. Native tracing tools are always the first choice for tracking file system access to Java applications. On Windows, use Process Monitor to track I / O. On Linux, use strace. Other platforms also provide similar functions. By tracing directly in Java, you can address ...

Added by Tokunbo on Fri, 04 Mar 2022 05:07:34 +0200

Byte beating technology sorting: how to be efficient and practical Kotlin? Complimentary course + question bank

preface If a worker wants to do well, he must sharpen his tools first! In modern IT, every Android programmer needs the best tools to improve their skills and efficiency. In the brutal competitive industry of Android application development, only good programmers can survive. You need to show your customers the best technology and capabilities ...

Added by xluminex on Thu, 03 Mar 2022 14:03:13 +0200