Nginx HTTP load balancer
Config Simple config: nginx.conf Health check: https://docs.nginx.com/nginx/admin-guide/load-balancer/http-health-check/ Monitoring: https://docs.nginx.com/nginx/admin-guide/monitoring/live-activity-monitoring/
Category: Tech
Web stress test with jmeter
Download https://jmeter.apache.org/download_jmeter.cgi Get started https://jmeter.apache.org/usermanual/get-started.html INSTRUCTION Download jmeter -> extract PREPARE TEST PLAN open terminal run GUI ./bin/jmeter Create new Test Plan Right click on “Test Plan” -> Add -> Threads -> Thread…
SmartContract ICO Crowdsale simple
Please read this post first: Issue your ERC20 token with Solidity on Ethereum Blockchain [https://medium.com/p/6e640eb613ff] Similar with ERC20 token, now let create a ICO Crowdsale with simple abstract: Start date…
Voting Application using Smart Contract
Please read some useful posts first: Issue your ERC20 token with Solidity on Ethereum Blockchain [https://medium.com/p/6e640eb613ff] SmartContract ICO Crowdsale simple [https://medium.com/p/35dc5ff02459] In this demo, I use web3 version 1.0.0-beta.33, solidity…
Issue your ERC20 token with Solidity on Ethereum Blockchain
I created smart-contract follow ERC20 Standard to issue an awesome token. It’s easy. Let’s start. Preparing: Install Metamask: https://metamask.io/ Create new Eth account with Metamask on Ropsten Test Network Init some…
Upgrade mongodb from 3.6.3 to 4.4.4
STOP APPLICATION BACKUP DATABASE UNINSTALL OLD DATABASE INSTALL NEW ONE VERIFY INSTALLATION Add user role Public db Restart mongodb RESTORE DATABASE RESUME APPLICATION
Staking strategy with a fair reward distribution.
The Stake event begins with fixed pool size and staking time. How to deal with fairy things? (1) The reward should be fixed at staking time and maybe grow up…
[cryptocurrencies] Deal with a pending transaction
The problem is caused by a too-small fee for that transaction. Bitcoin Way 1: Wait for over 48h (2–3 days) and that transaction will be rejected. 😀 Way 2: Re-broadcast your…
Flutter observer pattern
Combine with provider to access subject anywhere instead of static approach
Flutter Mux live stream RTMP, HLS .m3u8
For streamer: Live stream with RTMP protocol using rtmp_publisher (other libraries are not working or not completely done) For viewer: View live stream with HLS m3u8 format: ext_video_player, video_player: only…