Category：Architecture Design
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Time：2020-9-20
preface This is an architecture design based on small and medium enterprises or teams. Don’t consider big factories. There are good reasons to believe that large factories have absolute strength to build a rather complex environment. What is a small and medium-sized enterprise or team like? The development team is not fully […]
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Time：2020-9-18
Internet of things massive device heartbeat registration, off network clearance — multithreading high concurrency mutex landing catalog Internet of things massive device heartbeat registration, off network clearance — multithreading high concurrency mutex landing 1. Application background 2. Overall framework 2.1. Heartbeat registration framework 2.1.1. Mass equipment 2.1.2. Heartbeat report handler process 2.2. Off grid cleaning […]
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Time：2020-9-17
1.Model management: web online process designer, preview process XML, export XML, deploy process 2.Process management: import and export process resource file, view flow chart, reflect process model according to process instance, and activate pending 3.Process in operation: view process information, current task node, current flow chart, void pause process, assign to do person 4.The process […]
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Time：2020-9-16
preface Now basically all kinds of mobile phonesAPPRegistration will use mobile phone verification code, including somePCThe mobile phone number will also be used as the unique identification verification for the end website! Coincidentally, Xiao Ming’s boss asked him to develop a user registration function, and forced users to register and bind mobile phones. He called […]
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Time：2020-9-15
With all due respect, how much do you know about the open source web framework? Have you ever tried to write a framework? What are the parsing methods of XML? Can you answer it?! It doesn’t matter if you don’t have an answer in mind, because through today’s sharing, you can easily get the following […]
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Time：2020-9-14
Let’s think about message queuing： 1. Why is MQ used in the system? Must it be used in distributed systems? 2. What middleware does MQ have? What are their characteristics? 3. Does MQ bring benefits to the system, but does it bring any problems? How to solve it? Generally, during our interview, the interviewer will […]
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Time：2020-9-13
The company has a value card recharge business: customers open official account card service in WeChat public account, recharge the card through WeChat payment, and customers can receive the notification and consume after the recharge is successful. It seems to be a very simple business, and the implementation of our stored value card team at […]
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Time：2020-9-12
What practical application scenarios are message queuing applied to? 1、 On the application scenarios of message queue 1. Asynchronous processing: such as SMS notification, terminal status push, APP push, user registration, etc 2. Data synchronization: business data push synchronization 3. Retrying compensation: failed bookkeeping 4. System decoupling: communication up and down, terminal abnormal monitoring, distributed […]
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Time：2020-9-11
1、 What is architecture I think there are 11 answers to this question, because the other one is the result of compromise. Ha ha, I understand that architecture is the skeleton, as shown in the following figure: The support of the human body is mainly borne by the skeleton, and then the muscles, nerves […]
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Time：2020-9-10
1. Code generator:[positive and negative two-way] (single table, main table, detail list, tree table, sharp tool for rapid development)Freemaker template technology, 0 code does not need to be written, generating a complete module with page, table building SQL script, processing class, service and other complete modules2. Multiple data sources:(support to connect numerous databases at the […]
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Time：2020-9-9
Thinking of system module partition design preface First of all, let’s make it clear that the system module division here is aimed at the technical division of client, service and common, rather than the module division for specific business. Avoid wasting your time due to ambiguity. Direct cause A technical team in the company failed […]
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Time：2020-9-8
With the continuous development of modern society, there are more and more demands for the security industry. In recent years, major security manufacturers have sprung up like mushrooms, such as Haikang, Dahua and Yushi, which mainly focus on video monitoring; Niubei, which mainly focuses on access control. Major platforms are also involved in the security […]
