… to analyze all sorts of different technologies including memcached, http, redis, mongodb, etc. I used it recently to help diagnose an…
Post: Looking at Redis
August 27, 2009 By 27 Comments
… updates between database dumps. Because dump is basically serial write Redis does not an expensive IO subsystem. Also because this dump… while doing flush. The background flush in Redis is designed the following way – Redis process forks and justs dumps the database it… or binary log position. Replication is asynchronous and low overhead – redis will perform the database dump and store the commands on…
Post: Redis Benchmarks on FusionIO (Round 1)
December 10, 2009 By 7 Comments
… ability to operate in “append-only file persistence mode”, meaning Redis has graduated from a semi-persistent to a fully-persistent system! Using the redis-benchmark script included, I ran the following command ./redis-benchmark in five modes: 1 – In… everysec, which explicitly calls an fsync every second. (By default, redis-benchmark invokes 50 parallel clients, with a keep alive of…
Comment: Looking at Redis
November 21, 2009 By 27 Comments
… multiple fields in a single operation. Redis 1.2 will support an Hash type. Redis 1.1 supports append-only journal for… three different fsync() policies (never, every second, after every write). Redis 1.1 is 10x faster with operations like LRANGE or… > 1k. For any info please drop a message into the Redis Google Group and we’ll try to help. Cheers, Salvatore…
Comment: Looking at Redis
November 20, 2009 By 27 Comments
Hi Peter, 1: I am looking at redis and see whether there is a chance to use it …/second in mysql, then for redis, that’s 1000*10=10,000 set/second as redis can’t set many columns (not… as mysql. For query many columns such as 10 columns, redis could return a list, so one query could be mapped…
Comment: Looking at Redis
October 20, 2011 By 27 Comments
Hi sir, i am new to the Grails and Redis . i have to build a project by using above technologies. i feel comfort with Grails but i coming to Redis i know basic command now to run it thats it… project which build on both Grails and Redis . and pls explain me how to configure Redis in config.groovy. i am waiting…
Comment: High Rate insertion with MySQL and Innodb
January 10, 2011 By 16 Comments
… you describe. I found one solution, i dropped MySQL for Redis. I realized that most of the operation i do (like… useless overhead, combining the server side data structure capacities of Redis with its very good performance and its “safeness”, i can just write/read data from Redis without having to worry. Which is what most developers are…
Comment: Looking at Redis
August 28, 2009 By 27 Comments
… problem, for other domains it is a strength IMHO) of Redis not supporting paging and being all in memory. Currently it… paging in a way similar to operating systems, that is Redis objects that were not accessed recently will get swapped on… memory. The first thing to address is the release of Redis 1.0 that is mostly a matter of small patches…
Comment: Redis Benchmarks on FusionIO (Round 1)
December 14, 2009 By 7 Comments
Hello, I think that SSD will do a difference in Redis once we’ll have Virtual Memory implemented. Redis will random-access the swap file likely.
Comment: Redis Benchmarks on FusionIO (Round 1)
December 10, 2009 By 7 Comments
… does not look a very good use case for it – Redis whenever it periodically dumps its memory or whenever it is… be getting is not impressive) Also I’m wondering if Redis has got “Group Commit” implemented in append only mode – will…
