Beyond Development: Exploring the Multifaceted World of Engineering at LINE as a TECH FRESH

Speaker: Brian Kuo
Event: APCS Camp 企業參訪

Transcript

2. Beyond Development
3. Brian Kuo LINE TRAVEL / Backend Engineer LINE TECH FRESH NTU IM / NTU CSIE
4. 01 02 03 04 What Observability is and Why it is important Applying Observability to find error and improve Tech Stacks & Concepts I think you should need From 20 to 2 Seconds How I Prepare for LINE Interview An Organization Culture and work style I appreciate How is it like to be a LINER Intro to Observability CONTENT
5. Intro to Observability What it is and Why it is Important?
6. Observability Proactive Issue Detection Root Cause Analysis Performance Optimization Observability, What’s & Why’s
7. Metrics Logging Traces Three Pillars of Observability
8. Logging • Immutable / Timestamped record of discrete events • Structured (JSON) format • Record necessary info for each request Recording the system's state when each individual event occurs. Logging
10. Logging • Contains of: • ID: metric name + label • Sample: value + timestamp • Constant overhead (only value is updated) • Easy to configure alerting rules Quantitative insights into system performance and resource utilization. Metrics
12. Logging • End-to-end visibility • Critical path detection Detailed analysis of request flow and dependencies for effective troubleshooting. Traces
14. From 20 to 2 Seconds How we apply observability to find error and improve the performance
15. About the Hotel Query Feature Hotel query result cannot be returned and displayed within 30 seconds Problem Statement:
16. 01 Alerting (Metrics) 02 Searching Error Info (Logging) Hotel query from ElasticSearch experienced an abnormally long execution Being alerted that we have encountered extremely slow execution time for hotel query Finding Error with Observability
17. 03 Source of Error The findIndex method takes too long for matching key and id. The time complexity is O(mn) Finding Error with Observability A Simple Example
18. Improving the Time Complexity from O(mn) to O(m+n) Boosting Efficiency with Map AS IS TO BE n m
19. How I Prepare for LINE Interview Tech Stacks & Concepts I think you should need
20. Tech Stacks You Might Need
21. Referring to Others’ Experiences Trust me, It is very Important!
22. Also, Belief Matters… I’m really Superstitious…
23. How is it like to be a LINER An Organization Culture and work style I appreciate
24. No Stupid Questions Embracing Changes Everyone Matters Organization Culture of LINE
25. No Stupid Questions Embracing Changes Everyone Matters LIFE at LINE
26. Sharing From Last Year’s APCS Camp Visit
27. Feel free to contact me! 2100 特點項⽬⽂字 特點項⽬ Any Questions? 1234 特點項⽬⽂字 特點項⽬ 999 特點項⽬⽂字 特點項⽬ Facebook Linkedin