The document outlines a presentation by Michael Dimmitt on Elixir and Phoenix, focusing on production workflows and deployment strategies using AWS. Key topics include the use of OTP for fault tolerance, Phoenix LiveView for real-time applications, and a hands-on workshop for setting up AWS and connecting to RDS. Dimmitt also shares useful resources and upcoming talk details on front-end data structures.

1. Intro:
Michael Dimmitt
Avid learner.
Elixir enthusiast, explainer of things.
Javascript doer of things. (React, Vue, Node, ...etc.)
Coming Soon: www.github.com/jax-ex

2. Why Elixir / Suggestions for different elixir tools.
Otp … added to any application it allows fault tolerance with supervisors and pid
i) Good for server side work. Api’s.
ii) Leverages a preemptive scheduler allowing large tasks not block
others.
Phoenix LiveView … leverages js socket to tell browser render content.
https://github.com/phoenixframework/phoenix_live_view/blob/master/lib/phoenix_live_view.ex#L68
i) Forms: Server side input validation, rendered quickly to users.
ii) Distribute a specific server result to multiple users. Example: chat
apps.

3. Scope of this talk. TIME LIMIT for the talk: 60 min.
Discussion welcomed after at Bottlenose Brewery.
1) Dive into common production workflows for phoenix.
i) asdf
ii) distillery
iii) elixir 1.9 releases
iv) docker-container
v) rds
2) Workshop time … AWS setup and then “hello world RDS”

4. ECS - EC2 and RDS: https://joaquimadraz.com/guide-to-deploy-an-elixir-phoenix-app-to-aws-ecs (free tier)
Cloud Formation Example: https://medium.com/mint-digital/elixir-deployments-on-aws-ee787aa02a9d
2 EC2, load balancer, RDS, CodeDeploy, S3 bucket for encrypted secrets, http through port
3333 to load balancer, ssh from configurable IP to instances using public/private key)
March 2019: https://www.cogini.com/blog/using-asdf-with-elixir-and-phoenix/
June 2019: https://www.cogini.com/blog/best-practices-for-deploying-elixir-apps/
June 2019: https://elixir-lang.org/blog/2019/06/24/elixir-v1-9-0-released/
Releases in phoenix June 2019: https://hexdocs.pm/phoenix/releases.html#content
Love those links!! Have a read yourself.

5. snippet regarding elixir releases
https://hexdocs.pm/mix/Mix.Tasks.Release.html

6. setup for releases:
https://hexdocs.pm/phoenix/releases.html#content
{
export SECRET_KEY_BASE=$(mix phx.gen.secret);
export DATABASE_URL=ecto://<name>:<pass>@localhost/hello_dev;
# export DATABASE_URL=ecto://USER:PASS@HOST/database
mix deps.get --only prod;
MIX_ENV=prod mix compile;
npm run deploy --prefix ./assets;
mix phx.digest;
}
https://github.com/jax-ex-public-repos/hello_phoenix_releases

7. Now, onto the demo / walk-though.
1) Create and AWS account.
2) Existing Ecto Repository: https://github.com/jax-ex-public-repos/ecto_workshop?organization=jax-ex-public-
repos&organization=jax-ex-public-repos
3) Connect the application to RDS. https://aws.amazon.com/rds/
4) Done. ✅

8. Now I will skip through these slides!!
Login to aws and connect to postgres.

9. Login to aws and connect to postgres.

10. Login to aws and connect to postgres.

11. Select Dev, convert later if needed.

12. Other people are better at this than me…
Link !
https://joaquimadraz.com/guide-to-deploy-an-elixir-phoenix-app-to-aws-ecs

13. Connect to RDS for dev environment:
vi config/dev.exs
Change the hostname to the ip address of the RDS server.
Add the username password and database name to the specific areas.
:wq (save and quit)
mix ecto.setup; mix phx.server;

14. final rds slide … integrate into elixir
Prod related db information.
DATABASE_URL="postgresql://USER:PASS@ENDPOINT/DATABASE_NAME" MIX_ENV=prod mix release
DATABASE_URL="postgresql://@localhost/ecto_workshop_dev" MIX_ENV=prod mix release
When building the Docker image, use --build-arg option to provide the secrets:
https://joaquimadraz.com/guide-to-deploy-an-elixir-phoenix-app-to-aws-ecs
docker build -t subs:latest
--build-arg PHOENIX_SECRET_KEY_BASE=super_secret_phoenix_key_base
--build-arg SESSION_COOKIE_NAME=session_cookie_name
--build-arg SESSION_COOKIE_SIGNING_SALT=super_secret_cookie_signing_salt
--build-arg SESSION_COOKIE_ENCRYPTION_SALT=super_secret_cookie_encryption_salt
--build-arg DATABASE_URL=postgresql://postgres:postgres@localhost/subs_prod
Documentation for releases in phoenix: https://hexdocs.pm/phoenix/releases.html#content

15. Thank you and Goodbye. And plug.
In September I will be giving a talk on front-end data-structures
and maybe looking at a data-structure from the postgres source code.
At the Ruby Jax Meetup:
Languages covered:
Go, Python, Ruby, Java, C#, C, C++.
A rough draft of the talk can be found here:
https://github.com/MichaelDimmitt/data-structures-and-algoritm-prep-talk