Vinícius Gajo 64J0
Let us define an observable microservice as one that exposes its internal state through events, metrics, and trace data. Ideally we can aggregate this data in some sort of centralized observability system for alerting and diagnostics. In my opinion there are tools that work much better than others and I will use those in this example but the most important part is that you have a starting point and your services can be observed and alerted on somehow. If your company does not have the means to setup all of this infrastructure you should consider buying one of the many SaaS options out today.
Disclaimer: I am not a native .net or F# developer, I think at this point in my career I've logged 2 weeks on an F# dev team so the implementations given below may not be idiomatic, however, my experience comes from being apart of both Devops and microservices dev teams in other teams and organizations.
That being said; let's start building an "observable" micro
Some recommended books for improving as a software developer
Most software books are too language specific and go out of date too quickly. What I find has stayed with me are books about bigger concepts, such as systems thinking and complexity, and also so-called "soft skills" such as management and psychology.
These are all really about developing empathy for other people :)
- "The Design of Everyday Things" by Donald Norman
| # Bash best practices and style-guide | |
| Just simple methods to keep the code clean. | |
| Inspired by [progrium/bashstyle](https://github.com/progrium/bashstyle) and [Kfir Lavi post](http://www.kfirlavi.com/blog/2012/11/14/defensive-bash-programming/). | |
| ## Quick big rules | |
| * All code goes in a function | |
| * Always double quote variables |
FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.
- By Edmond Lau
- Highly Recommended 👍
- http://www.theeffectiveengineer.com/
| # TODO: Verify to link statically some dependencies usually not available in a default instllation of RHEL/CentOS (ex.: libxcb) | |
| ################### | |
| ## Configuration ## | |
| ################### | |
| FFMPEG_CPU_COUNT=$(nproc) | |
| FFMPEG_ENABLE="--enable-gpl --enable-version3 --enable-nonfree --enable-runtime-cpudetect --enable-gray --enable-openssl --enable-libfreetype" | |
| FFMPEG_HOME=/usr/local/src/ffmpeg |
| # Retorna dados sobre o pregão | |
| http://www.bmfbovespa.com.br/Pregao-Online/ExecutaAcaoCarregarDados.asp?CodDado=IBOV,ticker&CA=undefined | |
| # Retorna ações e seus últimos valores negociados | |
| http://www.bmfbovespa.com.br/Pregao-OnLine/ExecutaAcaoCarregarDados.asp?CodDado=Ticker | |
| # Retorna o histórico do dia de um papel | |
| http://www.bmfbovespa.com.br/Pregao-Online/ExecutaAcaoCarregarDadosPapeis.asp?CodDado=petr4 | |
| # Retorna dados de um papel |