Common design patterns in java

Recently I want to study design patterns, but there are quite a few design patterns. I would like to ask what are the commonly used design patterns?

仅有的幸福 2017-05-27 17:41:16 0  8  945

When placing orders in the mall, do you design one table or two tables?

When placing orders in the mall, do you design one table or two tables? For example: Should we design wp_order and wp_order_goods tables, or only one wp_order_goods table?

骄阳似火 2020-08-21 09:28:09 0  0  1259

javascript - css design patterns

I would like to ask the master, what are the commonly used design patterns in CSS design, and what are the characteristics of each?

伊谢尔伦 2017-05-19 10:26:45 0  9  654

Product specification sheet design

I would like to ask the masters: I want to design a product-related table now, which involves multiple specifications and multi-specification values. How should I design the table and how many tables should I have?

A峰 2019-12-06 18:34:33 0  2  1486

Tailwind CSS: Crafting Navigation Design

I'm new to CSS and VueJs so I'm creating a tab panel design + functionality Currently I'm using the tailwindCSS plugin The design I want is like this: Current: CodePen I can't replicate this wish because I'm missing the : between elements of spaces: I tried using flexspace-x-10 or gridgrid-gap-20 bu...

P粉515066518 2024-02-26 16:48:59 0  1  393

请教:mongodb帖子类表设计

1.帖子有内容有回复，如果在mongodb里只用1个表的话，可以设计成这样 {代码...} 这样的设计的话，如何修改 user:456 里的content? {代码...}

天蓬老师 2017-05-02 09:21:46 0  1  600

A love letter from a Java programmer

Programmers have always given everyone the image of a person with high IQ and low EQ, who does not know how to be romantic and cannot make girls happy. However, I think programmers are romantic. Regarding this misconception, only one song can be used to express the voice of the majority of programme...

Q3396103977 2020-09-08 15:35:17 0  1  1238

Chinese programmers VS foreign programmers, what is the gap?

In everyone's impression, programmers' daily life is to work overtime in front of the computer. They like to wear plaid shirts, and their wages are high, but they have no time to spend, and they often get lost in 996 and cannot extricate themselves. I can’t help but wonder if foreign programmers are...

醉折花枝作酒筹 2021-04-23 16:38:15 0  1  1430

programming architecture

Can I ask you a question? I was writing a project recently, and my master asked me to write the programming architecture first, and then determine the implementation of the back-end code. I don’t know how to start. There is also what architecture specifically refers to. I found some information abou...

太阳 2020-08-10 22:59:42 0  0  934

php - E-commerce website database design

How to design the e-commerce website database? Are there any good templates?

高洛峰 2017-07-05 09:58:23 0  5  1635

mongodb - mogodb如何进行设计

想知道大家在做非关系型数据库的项目时是如何进行设计的，以学生选课为例，每个学生可以选择多个课程，每个课程可以让多个学生选择，这种多对多关系要如何设计，如果我要删除一个课程，如何保证数据库的一致性？

淡淡烟草味 2017-04-28 09:04:48 0  1  771

linux - php queue, how to design scheduled tasks?

PHP queue, how to design scheduled tasks?

世界只因有你 2017-06-23 09:11:37 0  4  965

python - Problems with personal blog database design

I need to design a personal blog and have encountered difficulties in database design. The function I want to implement is: ordinary users can only comment on blogs. The administrator (that's me) can log in, post blogs, and reply to comments. The original design was for tables with User, Admin, Post...

typecho 2017-06-28 09:23:13 0  3  883

mysql - database table structure design

Describe the requirements: Now we need to design the database table structure. There are many types of rules. How to design tables to store these rules. Each rule has common attributes and different attributes. Currently, I think of two methods: the first is through foreign keys (common attributes o...

習慣沉默 2017-06-30 09:55:23 0  3  1086

1024 Programmers Day surprise carnival! ! !

It’s time again for the annual programmer-only festival—1024 Programmers’ Day! PHP Chinese website wishes all apes a happy holiday! In this holiday: please be kind to our programmers, you can all be "paid to fish" today~~ In addition, php Chinese website 1024@ All programmers' heavy benefi...

藏色散人 2022-10-25 09:58:09 0  2  10686

php - Questions about data table design?

You need to design a table to store images, including the path to upload the image, and the description. Each icon has two images, one style before clicking and one style after clicking. How to design fields elegantly? Please give me some advice, thank you!

大家讲道理 2017-06-08 11:01:51 0  1  622

redis - 缓存方案如何设计才能切合业务需求？

缓存算是各个网站、服务的标配了，如何才能设计出一套切合实际需求的缓存方案，每个接触过缓存的Coder脑子里都会有自己的答案。**缓存模块从无到有，要如何设计？要考虑哪些因素？如何方式设计不足？如何防止设计...

高洛峰 2017-04-24 09:13:06 0  3  750

Mysql database design - chat record table design

I would like to ask all the experts, how do you design the chat database? Those who have experience can talk about their experience, and those who have no experience can discuss it together. The problems encountered so far: Assume that there are 1,000 people in the group chat, and user a sends a mes...

M࿆r.࿆z࿆h࿆a࿆n࿆g࿆ 2020-04-21 12:12:14 0  2  1687

How do you encrypt the password when designing the table?

Teacher, could you please tell me how to encrypt the password when designing the table?

Kirito 2018-05-22 19:39:10 0  5  1552