Mar 12, 2021Excited about Flutter 2 and Farewell to React NativeI began to use React Native at the end of 2016. In early 2019, I switched to Flutter in the production app and never looked back. In terms of the technology and the ecosystem, Flutter is much better than React Native. (I may write a post about why we should…Flutter1 min readFlutter1 min read
Aug 28, 2017Reading and Parsing NFC tag on iOS 11Apple finally opens iPhone’s NFC chip. With iOS 11, apps on iPhone 7 and iPhone 7 plus can read NFC tag using Core NFC. (Writing is not…IOS5 min readIOS5 min read
Published incodeburst·May 13, 2017React Native Debugging ToolsThis article introduces how to debug code (logic) and GUI of React Native apps. Originally it was the talk I made at a React.js/React Native meetup in April 2017. (This article was updated on Mar 17, 2018.) “A great…React Native7 min readReact Native7 min read
Jan 22, 2017Implementing Progress Tracker in React NativeThis post shows how I implement a progress tracker (progress bar, progress indicator) in React Native and the lessons I learnt. First version At the beginning, the design is like this. There are two buttons. There is an arrow between them.React Native4 min readReact Native4 min read
Nov 20, 2015Profiling memory usage of a Go appProfiling memory usage of a Go app net/http/pprof is a powerful package for profiling. This video introduces how to use it to do memory profiling. Let me write down the steps. Import the package in your go web project (it doesn’t have to be a web app). Just add this…Golang2 min readGolang2 min read
Sep 8, 2015Solving the SSL root certificates issueI created a docker container for a golang app, based on debian 7 image. Everything works well until it visits https. The error is x509: failed to load system roots and no roots provided. I thought there might be something that should be configured for golang. But actually, it is…Docker1 min readDocker1 min read
Jun 8, 2015Managing Docker images with tagsWhen you build Docker images many times, you will find it is very necessary to manage images with tags. If you build an image without a tag, the default tag ‘latest’ is created automatically. docker build -t company/myimage . The complete name is company/myimage:latest When you need to update a…Docker1 min readDocker1 min read
May 30, 2015Docker Tricks and TipsRecently I deployed my node.js app, Redis, Postgres, Nginx with Docker and wrote a tutorial. I want to share you with some tricks and tips about Docker. Choose Debian as the base image. Debian image is much smaller than other OS images. It is recommended in Docker’s official best practices. A problem is the packages in…Docker2 min readDocker2 min read
May 29, 2015Restoring/Backing up Postgres Database in a Docker ContainerIn the previous tutorial, I show you how to deploy a web app, Redis, Postgres, Nginx with Docker. This post shows you how to restore and backup Postgres database which is running in a Docker container. You can get all source code at https://github.com/vinceyuan/DockerizingWebAppTutorial. I use pg_dump to dump a…Docker3 min readDocker3 min read
May 29, 2015Deploying a Web App, Redis, Postgres and Nginx with DockerThis tutorial introduces how to deploy a web app, Redis, Postgres and Nginx with Docker on the same server. In this tutorial, the web app is a node.js(express) app. We use Redis as a cache store, Postgres as the database, and Nginx as the reverse proxy server. You can get…Docker8 min readDocker8 min read
