Hello. Appreciate your question. I think that this is a good use case for the Repository Pattern.

In your case, this might look something like this:

• TicketRepository, ScheduleRepository and TimerRepository interfaces which have their functions like create(), read(), update(), delete(), complexQueryByManyParams() etc. All your domain code should expect and operate on these interfaces.
• FirebaseTicketStore, FirebaseScheduleStore, FirebaseTimerStore classes which implement the respective interfaces. All your logic that relates to Firebase should be encapsulated here.
• You can later safely do things like swap out a FirebaseTicketStore with a MysqlTicketStore

You can consult the Design Patterns / Gang of Four book for more details

Off topic, but personally I don’t feel you should worry too much about having to change the database in the future. I have rarely seen it happen in my career.

https://www.crowdsec.net/

You can look into this or fail2ban to get functional limiters running up and running quickly. If you go with crowdsec, i would suggest to use the cs-firewall-bouncer which will drop bots at the firewall level.

2007 - Rob Pike and Ken Thompson think it would be really cool if C was more like Java, and that it would be even more cool if it used the Pascal-style “x := 5” syntax. They lock themselves in a dark room over the winter and create Go. People criticize it for not being more like Rust, despite Rust not having been invented yet.

2009 - After an airplane crash leaves Graydon Hoare stranded in the middle of the Arabian desert, a mysterious camel appears and saves his life. He creates Rust, and adds obtuse syntax and a merciless compiler to mimic the feeling of being stranded in the desert. Masochists worldwide rejoice.

2012 - Anders Hejlsberg discovers some mushrooms growing from the base of his bathtub. After consuming them, he has a revelation that C# needs more Javascript. He invents Typescript. Typescript is a relatively verbose, garbage collected, class based, statically typed, single dispatch, object oriented language with single implementation inheritance and multiple interface inheritance. Microsoft loudly heralds Typescript’s novelty.

Extra fun fact for comment reading friends: This post is the origin of the meme “Monads are just monoids in the category of endofunctors. What’s the problem?” Source