Goworker - A Resque backround worker in Go

An intro for Rubyists on background processing Resque jobs using Go

Transcript

1. a Go-based background worker for Resque
2. What is Go? ❏ compiled (fast) ❏ strongly typed ❏ first class functions ❏ concurrent ❏ C-style syntax
3. ❏ a single binary ❏ polls Resque-Queues ❏ manages worker state ❏ dispatches jobs via goroutines What is Goworker?
4. How does it work? Enqueue a Job in Ruby Land: ❏ RPOP the job from Redis ❏ parse JSON ❏ find worker func for class ❏ call worker func with args Same as: redis-cli RPUSH resque:queue:hello '{"class": "Hello", "args": ["World"]}'
5. WTF is a worker func? ❏ takes two Arguments: ❏ queue name ❏ Array of unspecified args ❏ returns an error on failure
6. Putting it together Define a main-func like in C: File worker.go Register your worker-func: File hello_worker.go
7. Run it! go get github.com/benmanns/goworker (install library + dependencies) go build (compile code + create executable) ./worker -queues=hello (run it + spawn 25 workers by default)
8. Type assertions ❏ Type-asserting all args can be quite tedious ❏ want to use custom argument types ❏ define structs
9. using structs https://github. com/mikezter/goworker/tree/worker-interface ❏ automatically type assert nested structures ❏ uses json.Unmarshal ❏ defines worker-interface:
10. Questions?