Are You Sure You Want to Use MMAP in Your Database Management System?
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LogDevice · Distributed storage for sequential data
Distributed storage for sequential dataLogDevice is a scalable distributed log storage system that offers durability, high availability, and total order of records under failures. It is designed for a variety of workloads including event streaming, replication pipelines, transaction logs, and deferred work journals.
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druidã¨ã„ã†ãƒªã‚¢ãƒ«ã‚¿ã‚¤ãƒ データ分æžãƒ„ールを知ã£ãŸ | κeenã®Happy Hacκing Blog
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Migrating Messenger storage to optimize performance
More than a billion people now use Facebook Messenger to instantly share text, photos, video, and more. As we have evolved the product and added new functionality, the underlying technologies that power Messenger have changed substantially. When Messenger was originally designed, it was primarily intended to be a direct messaging product similar to email, with messages waiting in your inbox the ne
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エンタープライズシステムã®ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã‚’ã‚„ã£ã¦ï¼‘ï¼å¹´ä»¥ä¸Šã€‚æ€ã†ã¨ã“ã‚を書ã„ã¦ã„ãã¾ã™ã€‚ãã®ä»–趣味を少々。。。 DBã®ä¸–ç•Œã«èµ·ããŸå¤§ããªæ³¢ ç¾åœ¨ã€ã©ã®è£½å“を使ã£ãŸã¨ã—ã¦ã‚‚RDBã®æ€§èƒ½å•é¡Œã¯å¿…ãšã¨ã„ã£ã¦ã„ã„ã»ã©ç™ºç”Ÿã™ã‚‹ã€‚ç†ç”±ã¯ç°¡å˜ã§ã€CPUã€ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ãŒé«˜é€ŸåŒ–（CPUã¯ãƒžãƒ«ãƒã‚³ã‚¢åŒ–ã€ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã¯10G-Ethernetã®ä¸€èˆ¬åŒ–ã‚„InfiniBandãªã©ï¼‰ã™ã‚‹ã®ã«ãƒ‡ã‚£ã‚¹ã‚¯ï¼ˆã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ï¼‰ãŒé«˜é€ŸåŒ–ã«è¿½ã„ã¤ã„ã¦ã„ãªã„ã‹ã‚‰ã 。ãã®å·®ã‚’埋ã‚る役割ã¨ã—ã¦ã€RDBãŒæ‹…ã£ã¦ã„るケースãŒå¤šãã€æ€§èƒ½å•é¡Œã«ãªã‚‹ã‚±ãƒ¼ã‚¹ãŒæ•£è¦‹ã•ã‚Œã‚‹ã€‚ ã ãŒã€ãã†ã„ã†æ™‚代ã®æµã‚Œã«å¯¾ã—ã¦å¤§ããªå¤‰é©ãŒèµ·ãよã†ã¨ã—ã¦ã„る。SSDã¯ã‹ãªã‚Šã‚³ãƒ¢ãƒ‡ã‚£ãƒ†ã‚£åŒ–ã—ã¦ããŸã®ã§è¨€ã†ã«åŠã°ãšã¨ã„ã£ãŸæ„Ÿã˜ã ãŒã€å€‹äººçš„ã«ã¯é€Ÿã„ã‚‚ã®ã®ãƒ‡ã‚£ã‚¹ã‚¯ã®ç½®ãæ›ãˆã«ã™ãŽãªã„ã¨æ€ã£ã¦ã„る。ã¤ã¾ã‚Šã€SSDã¯é€Ÿã„ãŒDBã®ã‚¢ãƒ¼ã‚テクãƒãƒ£ã«å¤§ããªå¤‰é©ã‚’ã‚‚ãŸã‚‰ã™ã‚‚ã®ã§ã¯ãªã„。ãŒã€ã“ã“ã«ãã¦
IOPS - Wikipedia
The neutrality of this article is disputed. Relevant discussion may be found on the talk page. Please do not remove this message until conditions to do so are met. (August 2016) (Learn how and when to remove this message) Input/output operations per second (IOPS, pronounced eye-ops) is an input/output performance measurement used to characterize computer storage devices like hard disk drives (HDD)
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About HaystackView more documents from Tomohiro MITSUMUNE. 先月ã®ç¤¾å†…勉強会å‘ã‘ã®è³‡æ–™ã‚’SlideShareã«å…¬é–‹ã—ã¾ã—ãŸã€‚写真サイト絡ã¿ã€ã¨ã„ã†ã“ã¨ã§Facebookã®Haystackã«ã¤ã„ã¦èª¿ã¹ã¦ã¿ã¾ã—ãŸã€‚æƒ…å ±ã‚½ãƒ¼ã‚¹ã¯Facebookã®ä¸ã®äººãŒæŠ€è¡“æƒ…å ±ã¨ã—ã¦å…¬é–‹ã—ã¦ã„ã‚‹æ–‡ç« ã‚’æ—¥æœ¬èªžã§ã¾ã¨ã‚ã¦ã‚ã‚‹ã ã‘ã§ã™ã€‚ã¾ãŸå°‘ã—å‰ã«å–り上ã’られã¦ã„ãŸ37signalsã®Haystackã§ã¯ã‚ã‚Šã¾ã›ã‚“。(37Signalsã®ã‚¦ã‚§ãƒ–デザイナー探ã—サービスHaystack | 秋元@サイボウズラボ・プãƒã‚°ãƒ©ãƒžãƒ¼ãƒ»ãƒ–ãƒã‚°) 英語ãŒã‚ã‚“ã¾ã‚Šã‚ˆãã‚ã‹ã£ã¦ãªã„箇所もã‚ã‚‹ã‚“ã§ã™ãŒã‚¶ãƒƒã‚¯ãƒªã¨æ„訳ã™ã‚‹ã¨ã€ Unixç³»ã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã§å¤šã採用ã•ã‚Œã¦ã„ã‚‹inodeã¯èŽ«å¤§ãªç”»åƒæžšæ•°ã‚’扱ã†å ´åˆã€ãƒ•ã‚¡ã‚¤ãƒ«ã‚¢ã‚¯ã‚»ã‚¹ã®ãƒ¬ã‚¹ãƒãƒ³ã‚¹é€Ÿåº¦ã‚’ç¶æŒã™ã‚‹ã«ã¯æ§‹é€ ã«å•é¡ŒãŒã‚ã£ãŸã®ã§ä¸èº«ã‹
Needle in a haystack: efficient storage of billions of photos
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第2回　memcachedã®ãƒ¡ãƒ¢ãƒªã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ã‚’ç†è§£ã™ã‚‹ | gihyo.jp
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GitHub - uber/kraken: P2P Docker registry capable of distributing TBs of data in seconds
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