It is said that open source is difficult to make money, how difficult is it? Jointly released by News Fast Delivery and Gitee “2022 China Open Source Developers Report” It shows that 53.25% of developers have never received income from participating in open source outside of work; another 28.79% of developers have income less than […]
Author: JD Technology Feng Jianhua With the continuous iterative update of the business, the size of the App is also increasing rapidly. From 2019 to 2022, it once exceeded 117M. During this period, we also made some optimizations, as shown in the red part of Figure 1. However, we are facing new challenges while optimizing.
Time-Frequency Transformation spectrum rearrangement cepstral coefficient Deconvolution spectral features Music Information Retrieval audioFlux is a library implemented in Python and C. It provides systematic, comprehensive, and multi-dimensional feature extraction and combination in the audio field. It combines various deep learning network models to conduct business research and development in the audio field. The following is
Author: JD Logistics Wang Yukun Software test design is an important testing activity in the testing process. How to design test cases can improve the efficiency and quality of our testing. A brief explanation is given from the following aspects. 1 Principles of test case design The basic principles of test case design include: effectiveness,
Test Case Design Guide- JD Cloud Developer’s Personal Space- News Fast Delivery Read More »
Rate limiter is a very basic network packet processing function, which is widely used in various network element devices and plays an important role in traffic scheduling, network security and other fields. Common rate limiters are implemented based on token buckets. Although the principle of token buckets is well known, we have also found some
Author: JD Retail Zhang Luyao At present, there are many functions in the system that require delayed processing: payment timeout cancellation, queuing timeout, delayed sending of SMS, WeChat and other reminders, token refresh, membership card expiration, etc. Through delayed processing, system resources are greatly saved, and there is no need to poll the database for
ProfileMe.dev is a GitHub personal home page beautification tool that helps developers create a more beautiful GitHub profile page in minutes. A live version of this project can be viewed at https://www.profileme.dev. features Users can easily create and customize their GitHub profiles, including the following. Introduction section (includes general information, links to portfolio and any
Summary:In order to evaluate the generalization ability of the model, that is, to judge whether the model is good or bad, we need to use a certain index to measure it. With the evaluation index, we can compare the pros and cons of different models, and use this index to further optimize the model. This
On March 20, 2023, China’s leading open source software company FIT2CLOUD officially released the 1Panel open source project. 1Panel (https://github.com/1Panel-dev) is a modern, open source Linux server operation and maintenance management panel. 1Panel’s core features and benefits include: ■ Quick website building:Deeply integrated with WordPress and Halo, domain name binding, SSL certificate configuration and other
There are many such articles about the differences and principles of Java BIO, NIO, and AIO, but they are mainly discussed between BIO and NIO, while there are very few articles about AIO, and many of them are just introductions. Take a look at the concepts and code examples. When learning about AIO, the following
Author: JD Retail Zhang Qiang I write this article in the hope of summarizing some of my experiences that I think are very valuable, which can help new colleagues who have just done testing, or old colleagues with rich testing experience to share. I hope that our lovely new colleagues, partners who are going to
1. Time series data and its characteristics Time Series Data is a series of indicator monitoring data that is continuously generated based on a relatively stable frequency, such as the Dow Jones Index within a year, the measured temperature at different time points in a day, and so on. Time series data has the following
Author: JD Logistics Zhao Shuai Yao Zaiyi Wang Xudong Meng Weijie Kong Xiangdong 1 Introduction The logistics contract center is the only entrance for JD logistics contract management. Provide merchants with the ability to create and seal contracts, and provide contract customization, filing, and query functions for different business lines. Due to the large number
author｜Jay Alammar Translation｜Yang Ting, Xu Jiayu Recently, AI image generation has attracted attention. It can generate beautiful images based on text descriptions, which has greatly changed the way people create images. Stable Diffusion As a high-performance model, it generates higher image quality, runs faster, consumes less resources and occupies less memory, and is a milestone
