
ethangarofolo
Author of Practical Microservices
Practical Microservices: Use of `userId` inside of message `metadata` attribute
There are a few places in the book where I recommended putting a userId
attribute inside of metadata
. I consider that advice a mistake now.
metadata
is about the mechanics of messaging, and if a user’s id matters to a component’s domain, then it belongs in the data
and not the metadata
.
Sorry for the confusion, and happy coding!
Popular Pragmatic Bookshelf topics

Whilst the author has been careful to provide exact results for the tests elsewhere in the book (such as surds with the transformation te...
New

Hello Brian,
I have some problems with running the code in your book. I like the style of the book very much and I have learnt a lot as...
New

I thought that there might be interest in using the book with Rails 6.1 and Ruby 2.7.2. I’ll note what I needed to do differently here.
...
New

I’m new to Rust and am using this book to learn more as well as to feed my interest in game dev. I’ve just finished the flappy dragon exa...
New

On page 78 the following code appears:
<%= link_to ‘Destroy’, product,
class: ‘hover:underline’,
method: :delete,
data: { confirm...
New

AWDWR 7, page 152, page 153:
Hello everyone,
I’m a little bit lost on the hotwire part. I didn’t fully understand it.
On page 152 @rub...
New

Hi, I’m working on the Chapter 8 of the book.
After I add add the point_offset, I’m still able to see acne:
In the image above, I re...
New

Book: Programming Phoenix LiveView, page 142 (157/378), file lib/pento_web/live/product_live/form_component.ex, in the function below:
d...
New

Docker-Machine became part of the Docker Toolbox, which was deprecated in 2020, long after Docker Desktop supported Docker Engine nativel...
New

@mfazio23
Android Studio will not accept anything I do when trying to use the Transformations class, as described on pp. 140-141. Googl...
New
Other popular topics

Any thoughts on Svelte?
Svelte is a radical new approach to building user interfaces. Whereas traditional frameworks like React and Vue...
New

Which, if any, games do you play? On what platform?
I just bought (and completed) Minecraft Dungeons for my Nintendo Switch. Other than ...
New

You might be thinking we should just ask who’s not using VSCode :joy: however there are some new additions in the space that might give V...
New

My first contact with Erlang was about 2 years ago when I used RabbitMQ, which is written in Erlang, for my job. This made me curious and...
New

If you are experiencing Rails console using 100% CPU on your dev machine, then updating your development and test gems might fix the issu...
New

This is going to be a long an frequently posted thread.
While talking to a friend of mine who has taken data structure and algorithm cou...
New

I am trying to crate a game for the Nintendo switch, I wanted to use Java as I am comfortable with that programming language. Can you use...
New

Author Spotlight
Rebecca Skinner
@RebeccaSkinner
Welcome to our latest author spotlight, where we sit down with Rebecca Skinner, auth...
New

If you want a quick and easy way to block any website on your Mac using Little Snitch simply…
File > New Rule:
And select Deny, O...
New

Inside our android webview app, we are trying to paste the copied content from another app eg (notes) using navigator.clipboard.readtext ...
New
Categories:
Sub Categories:
Popular Portals
- /elixir
- /rust
- /wasm
- /ruby
- /erlang
- /phoenix
- /keyboards
- /rails
- /js
- /python
- /security
- /go
- /swift
- /vim
- /clojure
- /java
- /haskell
- /emacs
- /svelte
- /onivim
- /typescript
- /crystal
- /c-plus-plus
- /tailwind
- /kotlin
- /gleam
- /react
- /flutter
- /elm
- /ocaml
- /ash
- /vscode
- /opensuse
- /centos
- /php
- /deepseek
- /scala
- /zig
- /html
- /debian
- /nixos
- /lisp
- /agda
- /sublime-text
- /textmate
- /react-native
- /kubuntu
- /arch-linux
- /revery
- /ubuntu
- /django
- /spring
- /manjaro
- /diversity
- /lua
- /nodejs
- /c
- /slackware
- /julia
- /neovim