| Version 5 (modified by jazz, 14 years ago) (diff) |
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2010-07-27
Cloud Computing
- RUN!PC 的雲端運算智庫 - 把一些新聞根據 IaaS, PaaS, SaaS 分類，還不錯的想法!!
- [benchmark] Yahoo! Cloud Serving Benchmark (YCSB) - 論文: Benchmarking Cloud Serving Systems with YCSB
- Yahoo 寫的效能測試軟體，YCSB 1.2 版支援 HBase, Cassandra, MongoDB
- 從論文簡報投影片得到的結論注意到幾件事情：
- 若資料庫特性是一半讀一半寫，MySQL 大約在 7500 operations/sec 時會到達效能極限。若資料庫特性是 95% 讀 5% 寫，就沒看到明顯效能極限。
- HBase 寫入飛快，但讀取會稍微慢一點，而且讀取的效率不太線性。(寫入記憶體所以超快，但成本也比較高，查詢時重建紀錄) 加機器時，不會有明顯的效能差異 (跟 HDFS 一樣，要跑 balancer 才會搬資料)。 - Low Update Latency, Higher Read Latency
- Cassandra 寫入稍微慢一點，讀取則比 HBase 快，特別是資料庫特性是 95% 讀取時比 HBase 快。
Embedded : Security
- 圖片來源：Attacks on Mobile and Embedded Systems: Current Trends by Mocana
- 圖片來源：U.S. Unprepared for Internet Device Flood: Unaddressed Security Problems & Talent Drought Threaten Long-Term Commercial, Government Interests By: Kurt Stammberger, CISSP, Adrian Turner and Mat Small, Mocana With: Rich Nass, Sarah Friar, Goldman Sachs
Attachments (12)
- 10-07-27_Hacking_Timeline.jpg (200.6 KB) - added by jazz 14 years ago.
- 10-07-27_The_Internet_of_Things.jpg (221.3 KB) - added by jazz 14 years ago.
- 10-07-27_Mobile_Security.jpg (190.7 KB) - added by jazz 14 years ago.
- 10-07-27_Number_of_Networked_Devices.jpg (145.2 KB) - added by jazz 14 years ago.
- 10-07-27_Device_Marketing.jpg (151.3 KB) - added by jazz 14 years ago.
- 10-07-27_Malware_Trend.jpg (98.0 KB) - added by jazz 14 years ago.
- 10-07-27_Smart_Meter_Trend.jpg (103.6 KB) - added by jazz 14 years ago.
- 10-07-27_cassandra_hbase_read_heavy.png (123.3 KB) - added by jazz 14 years ago.
- 10-07-27_cassandra_hbase_short_scans.png (83.3 KB) - added by jazz 14 years ago.
- 10-07-27_cassandra_hbase_update_heavy.png (127.5 KB) - added by jazz 14 years ago.
- 10-07-27_cassandra_hbase_scale_up.png (70.5 KB) - added by jazz 14 years ago.
- 10-07-27_NCHC_搜尋排行榜.PNG (429.6 KB) - added by jazz 14 years ago.
Download all attachments as: .zip
