Which header controls cross-origin resource sharing (CORS)?
Anonymous Quiz
9%
Authorization
3%
User-Agent
85%
Access-Control-Allow-Origin
3%
Content-Length
Which of these is NOT a valid way to define a method in Ruby?
Anonymous Quiz
7%
def beach; "relax"; end
46%
def surf() "cool" end
42%
def 123sun; "hot"; end
6%
def chill(*args); "😎"; end
What’s the main drawback of monolithic architecture in Ruby on Rails applications?
Anonymous Quiz
2%
No database support
64%
Harder to test small parts of the system
30%
Ruby cannot scale monoliths at all
4%
Controllers cannot talk to models
Forwarded from Android frameworks
🌡 WiFi Temperature Sensor (ESP32 + DHT11)
A simple IoT temperature and humidity sensor based on ESP32-C3 and DHT11.
The device measures temperature and humidity, sends the data to a backend server, and from there it can be forwarded, for example, to a Telegram bot.
https://github.com/UDFSoft/Wifi-Temp-Sensor/
A simple IoT temperature and humidity sensor based on ESP32-C3 and DHT11.
The device measures temperature and humidity, sends the data to a backend server, and from there it can be forwarded, for example, to a Telegram bot.
https://github.com/UDFSoft/Wifi-Temp-Sensor/
1👏2❤1👍1
What is the main risk of using Active Record callbacks too much in a Rails application?
Anonymous Quiz
5%
They make SQL queries run faster.
84%
They hide business logic inside models and make code harder to follow.
5%
They prevent background jobs from running.
5%
They force controllers to duplicate logic.
What will this code print?
puts "2 + 2 = #{2 + 2}"
puts "2 + 2 = #{2 + 2}"
Anonymous Quiz
4%
2 + 2 = 2 + 2
2%
2 + 2 = 22
93%
2 + 2 = 4
1%
Error
In a distributed Ruby system, what is the biggest challenge of scaling via microservices?
Anonymous Quiz
6%
Choosing gems for each service.
9%
Deploying to a single server.
3%
Running Rails without a database.
82%
Network communication, consistency, and monitoring.
How do you create a hash in Ruby?
Anonymous Quiz
98%
{ name: "Alice", age: 25 }
0%
[ name: "Alice", age: 25 ]
1%
( name: "Alice", age: 25 )
0%
< name: "Alice", age: 25 >
Which header is used to send authentication tokens in REST APIs?
Anonymous Quiz
9%
Content-Type
1%
Accept
88%
Authorization
3%
Cookie
What does HTTP status code 201 Created mean?
Anonymous Quiz
3%
The request failed due to server error.
91%
A resource was successfully created.
2%
The resource was deleted.
4%
The request is still processing.
Santa asks:
Which design choice makes systems easier to test?
Which design choice makes systems easier to test?
Anonymous Quiz
12%
Logic in controllers
15%
Logic in ActiveRecord models
72%
Logic in service objects / plain Ruby objects
1%
Logic in callbacks
👍4
Ruby in 2025 💎
Ruby in 2025 stayed calm and mature.
No hype, no drama — just stable, readable, productive code.
🚀 Performance kept improving (YJIT)
🛤 Rails focused on Hotwire and boring, reliable architecture
🏗 More modular monoliths, fewer unnecessary microservices
🧪 Cleaner code, fewer callbacks, more explicit logic
Ruby isn’t trendy anymore — and that’s its strength.
It’s a language for teams who value clarity, stability, and long-term maintenance ❤️
Ruby in 2025 stayed calm and mature.
No hype, no drama — just stable, readable, productive code.
🚀 Performance kept improving (YJIT)
🛤 Rails focused on Hotwire and boring, reliable architecture
🏗 More modular monoliths, fewer unnecessary microservices
🧪 Cleaner code, fewer callbacks, more explicit logic
Ruby isn’t trendy anymore — and that’s its strength.
It’s a language for teams who value clarity, stability, and long-term maintenance ❤️
1🔥13❤3🥰2