[2w word dry goods] the difference between ArrayList and LinkedList and the underlying implementation in JDK11
1 Overview
This article mainly describes the similarities and differences between ArrayList and LinkedList, as well as their underlying implementation environment (OpenJDK 11.0.10).
2 difference between the two
Before introducing the underlying implementation of the two in detail, let's take a brief look at the similarities and differences b ...
Added by speedyslow on Tue, 08 Mar 2022 07:31:21 +0200
Dynamically filter SQL query fields MyBatis
Dynamically filter SQL query fields MyBatis
In the permission system, the visible permission of data is usually controlled. Generally, there will be the control of the number of visible data rows and the control of data return columns. This paper mainly designs the technical design of column control.
requirement analysis
Filter the data fiel ...
Added by Push Eject on Wed, 19 Jan 2022 19:06:51 +0200
[Special Topic on Redis core principles] [technology improvement series] analyze and explore how to realize the hot key discovery mechanism of LFU and the principle of internal Scan technology
Preface introduction
It is inevitable that there are access hotspots in the business, and redis will also encounter this problem. However, how to find the hot key has been perplexing many users. Redis4 0 has brought us many new features, including LFU based hot key discovery mechanism.
Least Frequently Used
Least Frequently Used - referred t ...
Added by Patrick on Fri, 17 Dec 2021 11:33:19 +0200
Play the classic game little bee 40 years ago again. This time, the source code is cleared
This article is suitable for friends with C language foundation
This is from Hello GitHub Explaining open source projects Series, this issue explains the childhood memories of the post-80s and post-90s. si78c, a C language reprint of the classic arcade game space invader, also known as "little bee", was born in 1978.
Projec ...
Added by johnie on Wed, 01 Dec 2021 17:07:14 +0200
Do you really understand the five basic data structures of Redis?
Summary:
Do you really understand the five basic data structures of Redis? Maybe you need to see these knowledge points.
This article is shared from Huawei cloud community< Do you really understand the five basic data structures of Redis? You may need to take a look at these knowledge points >, author: Li Ziba.
1, Introduct ...
Added by phpserver on Mon, 22 Nov 2021 08:42:56 +0200