Implementing Stripe-like Idempotency Keys in Postgres — brandur.org
In APIs idempotency is a powerful concept. An idempotent endpoint is one that can be called any number of times while guaranteeing that the side effects will occur only once. In a messy world where clients and servers that may occasionally crash or have their connections drop partway through a request, it’s a huge help in making systems more robust to failure. Clients that are uncertain whether a
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Please stop calling databases CP or AP (2015-4-11) by Martin Kleppmann å…ƒã®è¨˜äº‹ã¯ä¸Šã®ãƒªãƒ³ã‚¯ã‚ˆã‚Šã”覧ã«ãªã‚Œã¾ã™ã€‚ã“ã¡ã‚‰ã®è¨˜äº‹ã¯Â 本人ã®è¨±å¯ã‚’å¾—ã¦ã€ç¿»è¨³ãƒ»æŽ²è¼‰ã—ãŸã‚‚ã®ã§ã™ã€‚翻訳ã¸ã®ãƒ•ã‚£ãƒ¼ãƒ‰ãƒãƒƒã‚¯ã¯ã‚³ãƒ¡ãƒ³ãƒˆã‚ˆã‚ŠãŠé¡˜ã„ã„ãŸã—ã¾ã™ã€‚ Jeff Hodgesã®Notes on Distributed Systems for Young Bloodsã¨ã„ã†å„ªã‚ŒãŸãƒ–ãƒã‚°ã§ã€CAP定ç†ã‚’使ã£ã¦ã‚·ã‚¹ãƒ†ãƒ を評価ã™ã‚‹ã“ã¨ãŒæŽ¨å¥¨ã•ã‚Œã¦ã„ã¾ã™ã€‚多ãã®äººã¯ã“ã®ã‚¢ãƒ‰ãƒã‚¤ã‚¹ã‚’真摯ã«èžãã€è‡ªåˆ†ãŸã¡ã®ã‚·ã‚¹ãƒ†ãƒ ã‚’CP（ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã®åˆ†å‰²ã®ã‚‚ã¨ã§ã¯ä¸€è²«æ€§ã¯ã‚ã‚‹ãŒå¯ç”¨æ€§ãŒãªã„）ã€AP（ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯åˆ†å‰²ã®ã‚‚ã¨ã§ã¯å¯ç”¨æ€§ãŒã‚ã‚‹ãŒä¸€è²«æ€§ãŒãªã„）ã€ã‚ã‚‹ã„ã¯ã¾ã‚Œã«CA（ã“ã‚Œã®æ„味ã™ã‚‹ã¨ã“ã‚ã¯ã€Œè‡ªåˆ†ã¯ã¾ã ５年å‰ã®Codaã®æŠ•ç¨¿ã‚’èªã‚“ã§ã„ã¾ã›ã‚“ã€ã§ã™ï¼‰ã¨è¡¨ç¾ã™ã‚‹ã‚ˆã†ã«ãªã‚Šã¾ã—
Eventual Consistencyã¾ã§ã®ä¸€è²«æ€§å›³è§£å¤§å…¨ - Qiita
Deleted articles cannot be recovered. Draft of this article would be also deleted. Are you sure you want to delete this article? TL;DR; Eventual Consistencyã¨ã‹è¨€ã„ãªãŒã‚‰ã©ã†ã›ã‚‚ã£ã¨ã¾ã¨ã‚‚ãªä¸€è²«æ€§å®Ÿè£…ã—ã¦ã‚‹ã“ã¨ã¯ã‚ˆãã‚ã‚‹ã‚“ã ã‹ã‚‰ã¿ã‚“ãªé©åˆ‡ãªåå‰ã‚’使ãŠã†ãœã€‚ ãªãœã“ã®è¨˜äº‹ã‚’書ãã®ã‹ NoSQLã®æ–‡è„ˆã«ãŠã„ã¦ã‚¹ã‚±ãƒ¼ãƒ©ãƒ“リティã¨ã®ãƒˆãƒ¬ãƒ¼ãƒ‰ã‚ªãƒ•ã§Eventual Consistencyã¨ã„ã†ç”¨èªžã¯çµæ§‹ãªé »åº¦ã§å‡ºã¦ãる。 ACIDã«å¯¾æŠ—ã—ã¦BASE(Basicaly Avalilable, Soft state, Eventual consistency)ãªã‚“ã¦è¨€è‘‰ãŒå‡ºã¦ããŸã‚Šã€CAP定ç†ã®ä¸ã®Aã¨Pã ã¨è¨€ã£ã¦ã¿ãŸã‚Šã€åˆ†æ•£ã‚·ã‚¹ãƒ†ãƒ ã®ã‚¹ã‚±ãƒ¼ãƒ©ãƒ“リテ
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BrewersCapTheorem - ブリュワー㮠CAP 定ç†
BrewersCapTheorem - ブリュワー㮠CAP å®šç† ç›®æ¬¡ ã“ã®æ–‡æ›¸ã«ã¤ã„㦠ブリュワー㮠CAP å®šç† - Amazon 㨠eBay ã®ã‚¯ãƒ¼ãƒ«ã‚¨ã‚¤ãƒ‰ ブリュワーã®(CAP)å®šç† ä¸€è²«æ€§ (Consistency) å¯ç”¨æ€§ (Availability) 分割è€æ€§(Partition Tolerance) 定ç†ã®é‡è¦æ€§ 図解ã§è¨¼æ˜Ž CAP ã¨æŠ˜ã‚Šåˆã† 1. 分割è€æ€§ã‚’諦ã‚ã‚‹ 2. å¯ç”¨æ€§ã‚’諦ã‚ã‚‹ 3. 一貫性を諦ã‚ã‚‹ 4. BASE ã«è·³ã¶ 5. å•é¡Œã‚’ã‹ã‚ã—ã¦è¨è¨ˆã™ã‚‹ ã¾ã¨ã‚ å‚考文献 ブリュワー㮠CAP å®šç† ã“ã®æ–‡æ›¸ã«ã¤ã„㦠[[http://www.professay.com/?page=university_essays university essay]] "Brewer's CAP Theorem - The kool aid Amazon and Ebay
Rust製ã®åˆ†æ•£ã‚ªãƒ–ジェクトストレージをOSSã¨ã—ã¦å…¬é–‹ã—ã¾ã—㟠- dwango on GitHub
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