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Under the Hood
- Daum UCC
Reach For More Secure
And Responsive Architecture
1. The Path of Daum
2. Problems on Mass Network Traffic
Environment and Their Solutions
3. Things can Never be forsaken fo...
The Path of Daum
2001 2002 2003 20052001 2002 2003 2005 20072007
1. The Path of Daum
•Approx. 1,000 Proprietary Unix Servers
•Poor R.O.I, L...
2001 2002 2003 20052001 2002 2003 2005 20072007
1. The Path of Daum
•Decision made
•Migrate to Linux based x86 servers.
•A...
2001 2002 2003 20052001 2002 2003 2005 20072007
1. The Path of Daum
•Radical Growth
•The Portion Linux based, cheap x86
se...
2001 2002 2003 20052001 2002 2003 2005 20072007
1. The Path of Daum
•The quality of x86 servers and open
source software w...
2001 2002 2003 20052001 2002 2003 2005 20072007
1. The Path of Daum
•Approx. 10,000 Servers, 4 PB of Storages
•The Largest...
1. The Path of Daum
UCC service is Growing Fast
2006.4
6360 %
2007.9
Problems on Mass
Network Traffic
Environment And
Their Solutions
2. Problems & Solutions
Optimizing Cost
•What was in our hand
The Largest Portion is Network Traffic
Network Traffic Cost
...
2. Problems & Solutions
Optimizing Cost
•Grasp the characteristic of UCC Service
"Let users have their contents as fast as...
2. Problems & Solutions
Optimizing Cost
•What we did
What we need was a little more than 1Mbps per session.
Set max downlo...
2. Problems & Solutions
Optimizing Cost
•The Result
Immediate Response: Network Traffic Reduced 15%
We also can cut the co...
2. Problems & Solutions
Performance Boost on Image Caching
•What was in our hand
Single request Dozens of images
As burden...
2. Problems & Solutions
Performance Boost on Image Caching
•What we did
Enforce Cache Servers more Optimally,
That is Hier...
2. Problems & Solutions
Performance Boost on Image Caching
•The Result
Origin Server Workload dropped
2. Problems & Solutions
Performance Boost on Image Caching
•The Result
Response Time improved dramatically
Worst: more tha...
Things can never be
forsaken for your own
UCC Video Service
3. Things can never be forsaken
Origin Data Protection
•NO WONDER
Whether you do it or let others do it
No matter what,
Yo...
3. Things can never be forsaken
Architecture represents essence of service
•The Long Tail
Contents must be transferred thr...
“The Challenge
For Reliable and Efficient Service”
Makes Daum UCC More Vaulable.
5.Conclusion
Thank you.
SungKyu Park, Daum Communicaions
lointain@daumcorp.com
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Under the hood daum ucc.20071105

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Under the hood daum ucc.20071105

  1. 1. Under the Hood - Daum UCC Reach For More Secure And Responsive Architecture
  2. 2. 1. The Path of Daum 2. Problems on Mass Network Traffic Environment and Their Solutions 3. Things can Never be forsaken for your own UCC Service 4. Conclusion
  3. 3. The Path of Daum
  4. 4. 2001 2002 2003 20052001 2002 2003 2005 20072007 1. The Path of Daum •Approx. 1,000 Proprietary Unix Servers •Poor R.O.I, Low Scalability
  5. 5. 2001 2002 2003 20052001 2002 2003 2005 20072007 1. The Path of Daum •Decision made •Migrate to Linux based x86 servers. •Adopt Open Source Software
  6. 6. 2001 2002 2003 20052001 2002 2003 2005 20072007 1. The Path of Daum •Radical Growth •The Portion Linux based, cheap x86 servers kept Increasing. •The Opening of Scaling out ERA
  7. 7. 2001 2002 2003 20052001 2002 2003 2005 20072007 1. The Path of Daum •The quality of x86 servers and open source software were getting better day by day. •Open Source and Linux Boom up •Keep Scaling Out.
  8. 8. 2001 2002 2003 20052001 2002 2003 2005 20072007 1. The Path of Daum •Approx. 10,000 Servers, 4 PB of Storages •The Largest of IT Infrastructure in Korea. •DAUM Pioneered UCC World.
  9. 9. 1. The Path of Daum UCC service is Growing Fast 2006.4 6360 % 2007.9
  10. 10. Problems on Mass Network Traffic Environment And Their Solutions
  11. 11. 2. Problems & Solutions Optimizing Cost •What was in our hand The Largest Portion is Network Traffic Network Traffic Cost Cut down Cost by Optimizing Contents Delivery Procedure
  12. 12. 2. Problems & Solutions Optimizing Cost •Grasp the characteristic of UCC Service "Let users have their contents as fast as Possible!“ Not always Good. Not all users are play video files till the end If we could restrict download bandwidth to minimum...?
  13. 13. 2. Problems & Solutions Optimizing Cost •What we did What we need was a little more than 1Mbps per session. Set max download bandwidth Infinite 5 Mbps Try to use just as much as we need.
  14. 14. 2. Problems & Solutions Optimizing Cost •The Result Immediate Response: Network Traffic Reduced 15% We also can cut the cost about 10% a month Before After Decrement Ratio Day 1 24 Gbps 19 Gbps - 15.4 % Day 2 22 Gbps 19 Gbps - 26.1 % Day 3 19 Gbps 16 Gbps - 16.9 %
  15. 15. 2. Problems & Solutions Performance Boost on Image Caching •What was in our hand Single request Dozens of images As burden on image servers gets bigger, QoS gets poorer.
  16. 16. 2. Problems & Solutions Performance Boost on Image Caching •What we did Enforce Cache Servers more Optimally, That is Hierarchical architecture that scales well Origin Server Primary Cache Secondary Cache
  17. 17. 2. Problems & Solutions Performance Boost on Image Caching •The Result Origin Server Workload dropped
  18. 18. 2. Problems & Solutions Performance Boost on Image Caching •The Result Response Time improved dramatically Worst: more than 5 seconds Current : Less than 500ms
  19. 19. Things can never be forsaken for your own UCC Video Service
  20. 20. 3. Things can never be forsaken Origin Data Protection •NO WONDER Whether you do it or let others do it No matter what, You Have to prepare appropriate Protection
  21. 21. 3. Things can never be forsaken Architecture represents essence of service •The Long Tail Contents must be transferred through Hot Zone and Cool Zone freely. Decent Architecture is required. Traffic Hot Zone Cool Zone
  22. 22. “The Challenge For Reliable and Efficient Service” Makes Daum UCC More Vaulable. 5.Conclusion
  23. 23. Thank you. SungKyu Park, Daum Communicaions lointain@daumcorp.com

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