How to migrate a legacy back end application to Spring Boot in one week

1. Porting legacy apps to Spring Boot in one week
By Erdem Günay (@gunayus)
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2. About Turkcell
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3. About Turkcell
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4. How I met Spring Boot?
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5. Turkcell Video – legacy BaaS
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6. Turkcell Video – legacy BaaS
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7. Porting to Spring Boot – end of 1st hour
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http://spring.io/guides/gs/actuator-service/

8. Porting to Spring Boot – end of 1st day
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9. Porting to Spring Boot – end of 1st day
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10. Porting to Spring Boot – end of the week
• All the legacy REST APIs are migrated to @RestController(s)
• Architecture is redesigned
• Reimplemented as true, simple Spring 4 web application
• Zero mobile client update
• Faster development, running & debugging
• Jboss netty  Apache web server & Tomcat 7
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11. Porting to Spring Boot – number of sessions
%100
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12. Porting to Spring Boot – throughput
500
450
400
350
300
250
200
150
100
50
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0
Throughput (GB)
Total

13. Android Remote App Configuration
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14. Android Remote App Configuration
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15. Android Remote App Configuration
[operation] == 'command' and [manufacturer] == ‘turkcell' and [model] == 't50‘
{
"operation": "command",
"manufacturer": "turkcell",
"model": "t50",
"appVersion": "31",
"board": "MSM8226",
"device": "msm8226",
"hardware": "qcom",
"networkCountryIso": "tr",
"resolution": "720x1184"
}
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16. Ongoing projects
• All new projects are "bootiful"
• Object storage project with 1 Million users and 2 PB storage
capacity
• Mobile analytics platform 90 Million transactions per day
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Spring
Framework
Spring
Security
Spring
Data
Spring
Integration
Spring
Social
Spring REST &
Web Services
Spring
Boot

17. Thanks
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@gunayus