X-Git-Url: https://git.saurik.com/redis.git/blobdiff_plain/7f4e28e75046104599a5d83c493fdfd78f93ab49..4eddb121563a9e50cf2ee66e2a0ff7c186dd696a:/doc/FAQ.html diff --git a/doc/FAQ.html b/doc/FAQ.html index 87be5de5..531fb708 100644 --- a/doc/FAQ.html +++ b/doc/FAQ.html @@ -16,7 +16,7 @@
-FAQ: Contents
  Why I need Redis if there is already memcachedb, Tokyo Cabinet, ...?
  Isn't this key-value thing just hype?
  Can I backup a Redis DB while the server is working?
  What's the Redis memory footprint?
  I like Redis high level operations and features, but I don't like it takes everything in memory and I can't have a dataset larger the memory. Plans to change this?
  Ok but I absolutely need to have a DB larger than memory, still I need the Redis features
  I have an empty Redis server but INFO and logs are reporting megabytes of memory in use!
  What happens if Redis runs out of memory?
  What Redis means actually?
  Why did you started the Redis project? +FAQ: Contents
  Isn't this key-value thing just hype?
  Can I backup a Redis DB while the server is working?
  What's the Redis memory footprint?
  I like Redis high level operations and features, but I don't like it takes everything in memory and I can't have a dataset larger the memory. Plans to change this?
  Why Redis takes the whole dataset in RAM?
  If my dataset is too big for RAM and I don't want to use consistent hashing or other ways to distribute the dataset across different nodes, what I can do to use Redis anyway?
  Do you plan to implement Virtual Memory in Redis? Why don't just let the Operating System handle it for you?
  Is there something I can do to lower the Redis memory usage?
  I have an empty Redis server but INFO and logs are reporting megabytes of memory in use!
  What happens if Redis runs out of memory?
  Does Redis use more memory running in 64 bit boxes? Can I use 32 bit Redis in 64 bit systems?
  How much time it takes to load a big database at server startup?
  Background saving is failing with a fork() error under Linux even if I've a lot of free RAM!
  Are Redis on disk snapshots atomic?
  Redis is single threaded, how can I exploit multiple CPU / cores?
  I'm using some form of key hashing for partitioning, but what about SORT BY?
  What is the maximum number of keys a single Redis instance can hold? and what the max number of elements in a List, Set, Ordered Set?
  What Redis means actually?
  Why did you started the Redis project?

FAQ

@@ -26,7 +26,7 @@
-

Why I need Redis if there is already memcachedb, Tokyo Cabinet, ...?

Memcachedb is basically memcached done persistent. Redis is a different evolution + = Why I need Redis if there is already memcachedb, Tokyo Cabinet, ...? =

Memcachedb is basically memcached done persistent. Redis is a different evolution path in the key-value DBs, the idea is that the main advantages of key-value DBs are retained even without a so severe loss of comfort of plain key-value DBs. So Redis offers more features:

@@ -34,10 +34,33 @@ So Redis offers more features: