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Go bei der 4Com GmbH & Co. KG
- 1. 1 bei der 4Com GmbH & Co.KG
- 2. Hallo!Ich bin Jonas Riedel Software Architekt 4Com GmbH & Co.KG riedel@4com.de 2
- 3. 3
- 4. 4Com ▪ Kommunikation effektiv abwickeln ▪ Anrufe, Email, Chat, Whatsapp etc. ▪ Wir sind die Cloud für unsere Kunden ▪ Beispiel: ADAC 4
- 5. Produkte 5
- 6. 6
- 7. Go ? 7
- 9. Microservices 9 ▪ Funktionalität aufspalten □ Single Responsibility □ Bounded Context ▪ Schnittstellen □ Definierte API (Nachdenken) □ Dokumentiert
- 10. Microservices II 10 ▪ Eigene GUI (SCS) ? ▪ Single Sign On ▪ Self fulfilling prophecy
- 11. Ein Microservice kommt selten allein... 11
- 12. Microservices III 12 Welche Technologie ? ▪ C++ suboptimal □ http, json, utf-8, E-Mail □ zu wenig Entwickler ▪ PHP suboptimal □ als Daemon instabil □ nicht wirklich performant
- 13. Go ! 13
- 14. Go the good parts ▪ KISS ▪ batteries included □ http (Client, Server) □ JSON, XML ▪ Duck typing ▪ Single Binary ! ▪ go format, go test…. 14
- 15. 15 Mindset
- 16. Go das Mindset ▪ KISS ▪ YAGNI ▪ Nebenläufigkeit ▪ Testbarkeit ▪ When in Go, do as Gophers do 16
- 17. ToolsDreimal abgesägt und immer noch zu kurz. 17
- 18. Tools ▪ govendor github.com/kardianos/govendor ▪ Gorilla www.gorillatoolkit.org ▪ sqlx github.com/jmoiron/sqlx
- 19. Tools ▪ Resty github.com/go-resty/resty □ Backoff Retry Mechanism □ Automatic marshal and unmarshal □ Cookie Support □ Mächtiges Response Objekt □ Body, Code, Zeiten etc.
- 20. Tools ▪ Chi github.com/go-chi/chi □ 100% compatible with net/http □ Context □ Doc generation □ Diverse Middlewares
- 21. Tools ● CCache github.com/karlseguin/ccache item := cache.Get("user:4") if item == nil { //handle } else { user := item.Value().(*User) }
- 22. Metriken ● Prometheus github.com/prometheus/client_golang ○ Pull Modell ○ Powerful querys ○ Metrik Name und Labels
- 23. package main import ( "github.com/prometheus/client_golang/prometheus/promht tp" ) func main() { http.Handle("/metrics", promhttp.Handler()) log.Fatal(http.ListenAndServe(*addr, nil)) }
- 24. go_gc_duration_seconds_sum 2.515562808 go_gc_duration_seconds_count 18014 go_goroutines 71 go_info{version="go1.9.1"} 1 go_memstats_alloc_bytes 7.8449152e+07 go_threads 11 process_cpu_seconds_total 9428.15 process_max_fds 1024 process_open_fds 37 process_start_time_seconds 1.52727179837e+09
- 25. Grafana
- 27. func TestSpec(t *testing.T) { // Only pass t into top-level Convey calls Convey("Given some integer with a starting value", t, func() { x := 1 Convey("When the integer is incremented", func() { x++ Convey("The value should be greater by one", func() { So(x, ShouldEqual, 2) }) }) }) }
- 29. Tools ▪ Jenkins □ Testabdeckung □ Keine CI/CD ▪ Goland IDE https://www.jetbrains.com/go/
- 30. Blob Storrage ▪ Minio https://www.minio.io/ □ S3 compatible □ High Available
- 31. Process Manager ▪ Governator http://governator.io/ (down) □ Automatische restarts □ Logfiles
- 32. ▪ Consul □ https://www.consul.io/ □ Hashicorp □ KV Store □ Leader Election ▪ Fabio □ https://fabiolb.net/ Service Discovery
- 34. Lessons Learned ▪ Go □ Embrace Go □ Easy to pick up ▪ Microservices □ Service Discovery □ Metriken/Überwachung/Alerting □ max_open_files
- 35. Zukunft ▪ Message Queue □ (G)NATS ▪ SingleSignOn □ Keycloak □ JWTs
- 36. Zukunft ▪ Container □ Docker □ Kubernetes ▪ Terraform □ Staging
- 37. Danke! Fragen ? PS: we are hiring…. 37