Buckle up your shoes and prepare to tackle the unique challenge of migrating web applications to Elixir.

Become an Elixir Professional

Elixir is a relatively new framework but has shown rapid growth due to its flexibility as a functional, concurrent, distributed programming language. In this module, we'll learn about adopting an Elixir-based technology stack for distributed web applications. Then, we'll learn high-level concepts such as staffing, code management, and legacy systems. We’ll also learn to develop our Elixir environment with a walkthrough of making a functional transition, distributing Elixir, and integrating external code. We'll wrap up the module by looking at deployment and maintenance functions, assessing performance, and finalizing the application.

Adopting Elixir for Software Engineering Leads & Managers

----
## Useful GitHub links

* [Hiring without the whiteboards](https://github.com/poteto/hiring-without-whiteboards)
* [comeonin](https://github.com/riverrun/comeonin)
* [nifsy](https://github.com/antipax/nifsy)
* [markdown](https://github.com/devinus/markdown)
* [Nifsy project](https://github.com/ericentin/nifsy) 
* [Porcelain](https://github.com/alco/porcelain) 
* [erlexec](https://github.com/saleyn/erlexec) 
* [erlport project](https://github.com/hdima/erlport)
* [Rustler](https://github.com/rusterlium/rustler) 
* [peerage](https://github.com/mrluc/peerage)
* [libcluster](https://github.com/bitwalker/libcluster)
* [English-words repository](https://github.com/dwyl/english-words)
* [recon](http://ferd.github.io/recon/)
* [tracer](https://github.com/gabiz/tracer)
* [exometer](https://github.com/Feuerlabs/exometer)
* [PryIn](https://github.com/pryin-io/pryin)

---
## Helpful tools

* [Travis-CI](https://travis-ci.org/)
* [circle-ci](https://circleci.com/)
* [Jenkins](https://www.jenkins.io/)
* [Ebert](https://sourcelevel.io/)
* [Blazemeter](https://www.blazemeter.com/), that is built on top of [JMeter](http://jmeter.apache.org/) 
* [loader.io](https://loader.io/) 
* [flood.io](https://www.flood.io/)
* [Rollbar](https://rollbar.com/) via [rollbax](https://github.com/ForzaElixir/rollbax)
* [Sentry](https://sentry.io/welcome/) via [sentry-elixir](https://github.com/getsentry/sentry-elixir)
* [Honeybadger](https://www.honeybadger.io/) via [honeybadger-elixir](https://github.com/honeybadger-io/honeybadger-elixir)
* [:sys module](http://erlang.org/doc/man/sys.html)
* [wObserver](https://github.com/shinyscorpion/wObserver)
* [visualixir](https://github.com/koudelka/visualixir) 
* [erlyberly](https://github.com/andytill/erlyberly)
* [DataDog](https://www.datadoghq.com/blog/statsd/)
* [InfluxDB](https://tech.forzafootball.com/blog/gathering-metrics-in-elixir-applications)
* [Prometheus and Grafana](https://aldusleaf.org/monitoring-elixir-apps-in-2016-prometheus-and-grafana/)
* [AppSignal](https://www.appsignal.com/elixir)
* [WombatOAM](https://www.erlang-solutions.com/capabilities/wombatoam/)
* [Scout](https://scoutapm.com/elixir-monitoring)
----

## Miscellaneous

* [“Rise from the Ashes” ](https://medium.com/@sugarpirate/rise-from-the-ashes-incremental-apis-with-phoenix-b08cd66bd142)
* [“It’s All About
the Guarantees.”](https://ferd.ca/it-s-about-the-guarantees.html)
* [“Evaluating Scalable Distributed Erlang for Scalability and Reliability”](https://ieeexplore.ieee.org/document/7820204?reload=true) by N. Chechina, K. MacKenzie, et. al.
* Registry [documentation](http://erlang.org/documentation/doc-7.2/lib/erl_interface-3.8.1/doc/html/registry.html)
* Writing [NIFs](https://www.erlang.org/doc/tutorial/nif.html)
* [Reference manual for erl_nif](https://www.erlang.org/doc/man/erl_nif.html)
* [Jinterface](http://erlang.org/doc/apps/jinterface/jinterface_users_guide.html) 
* [Erl_Interface](http://erlang.org/doc/tutorial/erl_interface.html)
* [Interoperability tutorial](http://erlang.org/doc/tutorial/introduction.html)
* [.relup manual](http://erlang.org/doc/man/relup.html)
* [.appup manual](http://erlang.org/doc/man/appup.html) 
* [Blue-green deployment](https://martinfowler.com/bliki/BlueGreenDeployment.html)
* [TLS and distributed Erlang](https://www.erlang-solutions.com/capabilities/erlang/)
* [The Erlangelist by Saša Juric´](http://theerlangelist.com/article/phoenix_latency) 
* [GenServer module](https://hexdocs.pm/elixir/GenServer.html#module-debugging-with-the-sys-module)
* [Agents](https://hexdocs.pm/elixir/Agent.html)
* [Tasks](https://hexdocs.pm/elixir/Task.html)
* [Latencies](http://latencytipoftheday.blogspot.com/2014/06/latencytipoftheday-most-page-loads.html) 

* The [NIF](https://www.educative.io/courses/adopting-elixir-for-leads-and-managers/strategy-1-native-implemented-functions-nifs) commands:
> **On Linux:** 
 `gcc -o priv/elixir_nif.so -shared -fpic \
-I/usr/local/erlang/18.1/lib/erlang/erts-9.2/include \
c_src/elixir_nif.c`

Remember, you’ll have to replace the `-I` with the path you found previously. The flags -shared and -fpic tell GCC to build a shared library with position-independent code. This means the code does not expect to be loaded into a specific memory address.

> On macOS, we need to specify two extra flags and the correct path for `-I`, like this: 
`gcc -o priv/elixir_nif.so -shared -fpic -dynamiclib \
-undefined dynamic_lookup \
-I/usr/local/Cellar/erlang/18.1/lib/erlang/erts-9.2/include \
c_src/elixir_nif.c`

Remember to type the previous on one line.

> And on Windows, we use this on one line: `cl /IERTS_INCLUDE_PATH=C:\erlang\18.1\lib\erlang\erts-9.2\include
/LD /MD /Fe priv\elixir_nif.so src\elixir_nif.c`

-----

----
# Useful GitHub links

* [Hiring without the whiteboards](https://github.com/poteto/hiring-without-whiteboards)
* [comeonin](https://github.com/riverrun/comeonin)
* [nifsy](https://github.com/antipax/nifsy)
* [markdown](https://github.com/devinus/markdown)
* [Nifsy project](https://github.com/ericentin/nifsy) 
* [Porcelain](https://github.com/alco/porcelain) 
* [erlexec](https://github.com/saleyn/erlexec) 
* [erlport project](https://github.com/hdima/erlport)
* [Rustler](https://github.com/rusterlium/rustler) 
* [peerage](https://github.com/mrluc/peerage)
* [libcluster](https://github.com/bitwalker/libcluster)
* [English-words repository](https://github.com/dwyl/english-words)
* [recon](http://ferd.github.io/recon/)
* [tracer](https://github.com/gabiz/tracer)
* [exometer](https://github.com/Feuerlabs/exometer)
* [PryIn](https://github.com/pryin-io/pryin)

---
# Helpful tools

* [Travis-CI](https://travis-ci.org/)
* [circle-ci](https://circleci.com/)
* [Jenkins](https://www.jenkins.io/)
* [Ebert](https://sourcelevel.io/)
* [Blazemeter](https://www.blazemeter.com/), that is built on top of [JMeter](http://jmeter.apache.org/) 
* [loader.io](https://loader.io/) 
* [flood.io](https://www.flood.io/)
* [Rollbar](https://rollbar.com/) via [rollbax](https://github.com/ForzaElixir/rollbax)
* [Sentry](https://sentry.io/welcome/) via [sentry-elixir](https://github.com/getsentry/sentry-elixir)
* [Honeybadger](https://www.honeybadger.io/) via [honeybadger-elixir](https://github.com/honeybadger-io/honeybadger-elixir)
* [:sys module](http://erlang.org/doc/man/sys.html)
* [wObserver](https://github.com/shinyscorpion/wObserver)
* [visualixir](https://github.com/koudelka/visualixir) 
* [erlyberly](https://github.com/andytill/erlyberly)
* [DataDog](https://www.datadoghq.com/blog/statsd/)
* [InfluxDB](https://tech.forzafootball.com/blog/gathering-metrics-in-elixir-applications)
* [Prometheus and Grafana](https://aldusleaf.org/monitoring-elixir-apps-in-2016-prometheus-and-grafana/)
* [AppSignal](https://www.appsignal.com/elixir)
* [WombatOAM](https://www.erlang-solutions.com/capabilities/wombatoam/)
* [Scout](https://scoutapm.com/elixir-monitoring)
----

# Miscellaneous

* [“Rise from the Ashes” ](https://medium.com/@sugarpirate/rise-from-the-ashes-incremental-apis-with-phoenix-b08cd66bd142)
* [“It’s All About
the Guarantees.”](https://ferd.ca/it-s-about-the-guarantees.html)
* [“Evaluating Scalable Distributed Erlang for Scalability and Reliability”](https://ieeexplore.ieee.org/document/7820204?reload=true) by N. Chechina, K. MacKenzie, et. al.
* Registry [documentation](http://erlang.org/documentation/doc-7.2/lib/erl_interface-3.8.1/doc/html/registry.html)
* Writing [NIFs](https://www.erlang.org/doc/tutorial/nif.html)
* [Reference manual for erl_nif](https://www.erlang.org/doc/man/erl_nif.html)
* [Jinterface](http://erlang.org/doc/apps/jinterface/jinterface_users_guide.html) 
* [Erl_Interface](http://erlang.org/doc/tutorial/erl_interface.html)
* [Interoperability tutorial](http://erlang.org/doc/tutorial/introduction.html)
* [.relup manual](http://erlang.org/doc/man/relup.html)
* [.appup manual](http://erlang.org/doc/man/appup.html) 
* [Blue-green deployment](https://martinfowler.com/bliki/BlueGreenDeployment.html)
* [TLS and distributed Erlang](https://www.erlang-solutions.com/capabilities/erlang/)
* [The Erlangelist by Saša Juric´](http://theerlangelist.com/article/phoenix_latency) 
* [GenServer module](https://hexdocs.pm/elixir/GenServer.html#module-debugging-with-the-sys-module)
* [Agents](https://hexdocs.pm/elixir/Agent.html)
* [Tasks](https://hexdocs.pm/elixir/Task.html)
* [Latencies](http://latencytipoftheday.blogspot.com/2014/06/latencytipoftheday-most-page-loads.html) 

* The [NIF](https://www.educative.io/courses/adopting-elixir-for-leads-and-managers/strategy-1-native-implemented-functions-nifs) commands:
> **On Linux:** 
 `gcc -o priv/elixir_nif.so -shared -fpic \
-I/usr/local/erlang/18.1/lib/erlang/erts-9.2/include \
c_src/elixir_nif.c`

Remember, you’ll have to replace the `-I` with the path you found previously. The flags -shared and -fpic tell GCC to build a shared library with position-independent code. This means the code does not expect to be loaded into a specific memory address.

> On macOS, we need to specify two extra flags and the correct path for `-I`, like this: 
`gcc -o priv/elixir_nif.so -shared -fpic -dynamiclib \
-undefined dynamic_lookup \
-I/usr/local/Cellar/erlang/18.1/lib/erlang/erts-9.2/include \
c_src/elixir_nif.c`

Remember to type the previous on one line.

> And on Windows, we use this on one line: `cl /IERTS_INCLUDE_PATH=C:\erlang\18.1\lib\erlang\erts-9.2\include
/LD /MD /Fe priv\elixir_nif.so src\elixir_nif.c`

-----

Find some helpful links that might strengthen your Elixir skills.

Three Adoption Stories

Concept: Team Building

Concept: Ensuring Code Consistency

Concept: Legacy Systems and Dependencies

Development: Making the Functional Transition

Development - Distributed Elixir

Development - Integrating with External Code

Production - Coordinating Deployments

Production - Metrics and Performance Expectations

Production - Making Your App Production Ready

Appendix

Conclusion

Some Useful Resources

Useful GitHub links

Helpful tools