Reliable label printer system

Cookpad Tech Kitchen #21 Show-and-Tell
https://cookpad.connpass.com/event/122585/

1. eliable label printer system Cookpad ech itchen #21 how-and- ell 2019.3.21 Shinsuke IMAI
2. whoami hinsuke A @imashin_ erverside engineer
3. Demo - print labels -
4. Agenda • When the label printer is used in our service • Why we develop this remote label printer • ow we develop this system
5. rder flow rder products
6. rder flow rder end time comes (a day before delivery)
7. rder flow TSP743II E3-24J1 JP UD-LT1 / EX SORACOM VPC AWS Printer CKPD VPC SORACOM Print batch rint product labels via celler network
8. rder flow roduct labels
9. rder flow A-2 A-1 B-2 B-1 Deliver labeled products to users A-2 B-2
10. Agenda • When the label printer is used in our service => Ans. sending ordered items • Why we develop this remote label printer • ow we develop this system
11. abel is mportant A-1
12. eliable label printer system is required
13. Agenda • When the label printer is used in our service => Ans. sending ordered items • Why we develop this remote label printer => Ans. All people depend on labels • ow we develop this system
14. First label printer • i ad Air (Cellular model) ◦ Application crashes ◦ Difficult to auto update • abel printer ( -820 WB Brother) ◦ aper jam • Direct wired ethernet connection ◦ Connection lost
15. ew idea • eplace ◦ i ad to a cloud computer ◦ unstable connection to stable connection ◦ the normal label printer to a stable label printer
16. Cloud computer
17. E router • D- 1 iodata ◦ ebooting ▪ Daily ▪ n connection lost ◦ onitoring ▪ ◦ ogging ▪ syslog
18. rinter • 743 tar icronics ◦ Controllable via C socket ▪ print / reboot / status check ◦ onitoring ▪ ◦ am less ▪ ??? ( est needed)
19. rinter • rints many labels ◦ never happen jam
20. rinter • rints many labels ◦ never happen jam ◦ many label cores are created
21. rinter • rints many labels ◦ never happen jam ◦ many label cores are created ◦ next seat engineers build unreliable Android tower
22. et’s build!!!
23. Direct print TSP743II E3-24J1 JP UD-LT1 / EX SORACOM VPC AWS Printer CKPD VPC SORACOM Print batch end label data from a batch to the printer
24. Development • etwork: @sorah ◦ Build a network to use soracom ◦ Device management
25. Development • rinter: @imashin ◦ Develop gem to control printer via C socket https://www.starmicronics.com/support/Mannualfolder/starline_cm_en.pdf https://rubygems.org/gems/star_ethernet
26. Development • Assemble: @imashin ◦ ake holes at the box ◦ lace devices in one box
27. Agenda • When the label printer is used in our service => Ans. reparing orders • Why we develop this online label printer => Ans. All people depend on labels • ow we develop this system => Ans. Assembling reliable devices and services