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ããã¯æ©è½ã®ãã¤ã³ãã¯SETNXã§ãã æå®ãããã¼ããªãã£ãå ´åã¯å¤ãã»ãããã¦1ãè¿ãã æ¢ã«åå¨ããå ´åã¯ä½ããã0ãè¿ã£ã¦ãã¾ãã ã¤ã¾ãã1ã¯ããã¯æåã0ã¯ä»ããããã¯æ¸ã¿ã¨å¤æãããã¨ãã§ãã¾ãã ããã§ã¯å®è£ ã«é²ã¿ã¾ãããã ã¾ãããã¯ã®ã¤ã³ã¿ãã§ã¼ã¹ãç¨æãã¾ãã public interface Lock { public void lock() throws TimeoutException; public void unlock(); } æä½éã®ããã¯ã¨ã¢ã³ããã¯ãç¨æãã¾ããã ç¶ãã¦ä¸èº«ãå®è£ ãã¾ãã public class RedisLock implements Lock { private static final String LOCK_KEY_PREFIX = "lock:"; private static final int LOCK_EXPIR
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Redisã®ã¡ã¢ãªä½¿ç¨éãmaxãè¶ ããå ´åã®æåã«ã¤ãã¦æ¤è¨¼ãã¦ã¿ãã ç°å¢: version: 2.4.16 Redisã§ã¯ã¿ã¤ã ã¢ã¦ãæéãè¨å®ãããã¼ã¯æéãè¶ ããã¨èªåã§åé¤ãããã¿ã¤ã ã¢ã¦ãæéãè¨å®ããªãã¨æ°¸ç¶çã«ä¿åãããã ã¾ããã¡ã¢ãªã®ç©ºãé åããªããªã£ãå ´åãæéã®ãããã®ããåé¤ããã¦ãã(ããã©ã«ãã®è¨å®ã®å ´å)ã 注æãã¹ãç¹ã¯ãæéãè¨å®ããã¦ããªããã¼ã¯åé¤å¯¾è±¡ã«ãªããªãã¨ãããã¨ã§ããã å®éã«ãã®æåãæ¤è¨¼ãã¦ã¿ãã ã¾ããæ¤è¨¼ããããããã«ã¡ã¢ãªã®ä½¿ç¨å¯è½ãªéã以ä¸ã®å¤ã«è¨å®ãã¦ãã(redis.conf) #æ°ãã«ãã¼ãä¿åããéã«maxmemoryã¨ã©ã¼ã«ãªããªãããããã®å¤ maxmemory 910KB maxmemory-policy 㯠以ä¸ãè¨å® #LRUã¢ã«ã´ãªãºã ã使ç¨ãã¦æéåãã«ãªã£ãã»ããã®ãã¼ãåé¤ maxmemory-pol
Twilio just released a post mortem about an incident that caused issues with the billing system: http://www.twilio.com/blog/2013/07/billing-incident-post-mortem.html The problem was about a Redis server, since Twilio is using Redis to store the in-flight account balances, in a master-slaves setup, with multiple slaves in different data centers for obvious availability and data safety concerns. Thi
Redis in Action ä½è :Carlson, Josiah L.Manning PublicationsAmazon Redis åºåé ä¿¡ãã£ã¦ãã¾ã@yutakikuchi_ã§ãã Redisã®å é¨å¦çã1ã¹ã¬ããã§åãã¦ãããããªã®ã§ããã«ãããã»ã¹ããRedisã«æ¸ãè¾¼ã¿å¦çã大éã«æµããæã«ã©ããªãã®ããæ¤è¨¼ãã¦ã¿ã¾ãããè¨èªã¯CããLibraryã¯hiredisã使ãã¾ããredis/hiredis hiredisã使ã£ã¦åä¸ããã»ã¹ã§å®è¡ããå ´åã¨ãApache Moduleã«hiredisãçµã¿è¾¼ãã§ãã«ãããã»ã¹ã®å®è¡ç¶æ ã§æ¤è¨¼ãã¾ããæ¤è¨¼æ©ã¯CentOS6.4ã§ãã hiredis Redisã®installãversion確èªãèµ·å Redisã®Versionã¯2.4.10ã§ãã $ sudo yum install redis -y $ redis-serv
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I recently rewrote my personal site using flask and peewee, breaking a good amount of stuff in the process. I was trying to track down the errors by tailing log files, but that didn't help alert me to new errors that someone visiting the site might stir up. I thought about setting up error emails a-la django, which is a tried and true method...but then I happened on a different approach. I won't s
RQ (Redis Queue) is a simple Python library for queueing jobs and processing them in the background with workers. It is backed by Redis and it is designed to have a low barrier to entry. It can be integrated in your web stack easily. RQ requires Redis >= 3.0.0. Getting Started First, run a Redis server. You can use an existing one. To put jobs on queues, you donât have to do anything special, just
Flask is a lightweight WSGI web application framework. It is designed to make getting started quick and easy, with the ability to scale up to complex applications. It began as a simple wrapper around Werkzeug and Jinja and has become one of the most popular Python web application frameworks. Flask offers suggestions, but doesn't enforce any dependencies or project layout. It is up to the developer
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