Howard Lee Cloud

心得 React js Video Tutorial Recommendation for free on YouTube | 推薦 React.js 免費教學影片 on YouTube

By Howard Lee 16 March 2021

I have taken three weeks for reminding myself and learning again React.js with three playlists on YouTube since tail part of last February. I recommend the video channel: The Net Ninja. Following video contents are helpful for me and easy to understand concept of React. Hands-on projects are also easy to follow up by myself. These videos clarify questions, which are existing in my mind, and lower bar for learning

學習 Mosquitto MQTT Start Support OCSP Stapling since version 1.6 | Mosquitto MQTT 自版本 1.6 開始支援 OCSP stapling

By Howard Lee 08 March 2021

Mosquitto starts to support OCSP stapling since version 1.6(20190417). Online Certificate Status Protocol(OCSP) can be used to query a certicate from client to server whether it is still valid or be revoked. OCSP is an alternative way for Certificate Revoke List(CRL). One of pros of OCSP is no need to maintain large list same as CRL. Most part of cons is that few programs support it. Some well-known programs such

心得 Mosquitto MQTT Reload Configuration Without Stop Execution | Mosquitto MQTT broker 重新載入設定檔時無須重啟

By Howard Lee 08 March 2021

I want to update some settings of mosquitto MQTT broker without stop running. There is a way to meet the goal. First, you need to setup pid_file setting of mosquitto.conf. pid_file setting will set pid content such as process identifier in the file under assigned path. And then I can setup a setting that I want process execution of mosquitto to reload configurations, for example acl_file. After I confirming a