General overviewAt the time of Android6.0 (Api23), the Android system added the api interface of fingerprint recognition, namely FingerprintManager, which defined the most basic fingerprint recognition interface. However, at the time of AndroidP (Api28), it was no longer officially recommended, and ... More >>

IntroductionApache Kafka is a distributed messaging system that has become an integral part of modern data processing pipelines. It is designed to handle real-time, high-throughput, and fault-tolerant data streaming. Kafka is widely used for ingesting, storing, and processing data in various applica ... More >>

What is a Task Scheduling FrameworkIn many applications, some tasks need to be performed periodically, such as generating reports, backing up data, updating caches, and so on. These tasks usually need to be executed automatically within a specified time interval, and need to run stably and reliably, ... More >>

1. Concept of Kotlin CoroutinesKotlin Coroutines is a well-designed thread framework that uses threads at the underlying level. Coroutines can be understood as tasks executed on threads, and these tasks can switch between different threads. A single thread can run multiple coroutines, and coroutines ... More >>

When it comes to API design and security, there are two main issues that must be addressed. If not handled properly, they can pose significant threats to the security and performance of the server.Based on my experience, API design primarily needs to consider the following two aspects: Preventing m ... More >>

1.NLP(Natural Language Processing)Natural language processing is an important direction in the field of computer science and artificial intelligence. It studies theories and methods that enable effective communication between humans and computers in natural language. Natural language processing is a ... More >>

Generally speaking, development engineers have defined microservice interfaces in the early stage of development, and test engineers and development engineers start their own development tasks almost simultaneously. However, this harmonious work scenario is soon destroyed by the spider web-like micr ... More >>

IntroductionThis article provides a comprehensive compilation of 16 essential coding practices that the author deems are indispensable for enhancing work efficiency 1. After modifying the code, remember to test it“Test the code after modification” is a basic requirement for every programmer. Don’t h ... More >>

After the table is indexed, sql can select the right index when the amount of data is small, but when the amount of data becomes large, it cannot select the correct index. We analyze the reasons for mysql’s wrong index selection from the following aspects. Impact the execution of sql cost analysis A ... More >>

About Online DDLDDL(Data Definition Language), that is, the data definition language, including new table, table add fields, change fields and other operations.Large table DDL at will execute dozens of minutes, even a few hours, such a long time to lock the table for the business is obviously unacce ... More >>