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Uploaded byIlya Starostin
Node proxy
Node.js middleware proxy allows for scalable and secure access to resources hosted on Azure Web Sites. The proxy provides horizontal and vertical scaling through its use of Node.js which provides high performance, low cost, and high flexibility. Performance tests show the proxy adds minimal overhead and processing times compared to direct access of the storage.
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Node proxy
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- 2. Introducing (How itwas) Azure Web Site CPU-Intensive worker role Web site file system DB
- 3. Introducing (Step 2:Scalable storage) Azure Web Site CPU-Intensive worker role Web site file system DB
- 4. Introducing (Step 3:Access securing) Azure Web Site CPU-Intensive worker role Web site file system DB Non-authorized user Authorized user Middleware proxy x
- 5. Why node.js ? •Fast for development and implementation • Low-cost solution • Horizontal and vertical scaling • High-flexibility • High-performance (…?) DB Load balancer
- 6. Performance (theoretical) • Workingin a one thread • Creation of a 2000 blank threads can take up than 3.7 sec (Windows 8) • It takes ~50 mb RAM • IO operations shouldn’t block main thread • Proxing of traffic from storage to client works almost at operation-system layer (when properly implemented) – through piping from source thread to another. Message loop picture
- 7. Performance (practical 5kb) Testingwith Apache AB console utill 1000 tries in 50 threads File size 5kb • Storage: • Proxy Connection Times (ms) min avg max Connect: 115 120 3082 Processin g: 127 5818 5964 Total: 242 5938 9046 Connnection Times (ms) min avg max Connect: 115 124 3142 Processin g: 244 6002 8865 Total: 359 6126 12007 4800 5000 5200 5400 5600 5800 6000 6200 1 2 Storagems Proxy Diff: Min value: 33% Av. Value: 3.1% Max value: 25%
- 8. Performance (practical 500kb) Testingwith Apache AB console utill 100 tries in 10 threads File size 535kb • Storage: • Proxy Storagems Proxy Diff: Min value: <1% Av. Value: 3% Max value: <1% Connnection Times (ms) min avg max Connect: 116 148 3100 Processin g: 950 2063 1318 Total: 1066 2211 4418 Connnection Times (ms) min avg max Connect: 115 118 127 Processin g: 965 1694 4334 Total: 1080 1812 4461 634 834 1034 1234 1434 1634 1834 2034 2234 2434 1 2
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