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author | Tobias Lütke <tobi@jadedpixel.com> | 2008-04-29 15:12:47 -0400 |
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committer | Tobias Lütke <tobi@jadedpixel.com> | 2008-04-29 15:12:47 -0400 |
commit | fef82759ff97692470496905951882a0aab49d5b (patch) | |
tree | 7acd6eb8ac07f96523ac3d99024e6a2099059d9b /activesupport | |
parent | 9f07b1edcd2955dc7af166c422309da55372a92c (diff) | |
download | rails-fef82759ff97692470496905951882a0aab49d5b.tar.gz rails-fef82759ff97692470496905951882a0aab49d5b.tar.bz2 rails-fef82759ff97692470496905951882a0aab49d5b.zip |
Implement increment/decrement on cache storage engines, using read/write by default and using atomic command on memcache
Diffstat (limited to 'activesupport')
-rw-r--r-- | activesupport/lib/active_support/cache.rb | 17 | ||||
-rw-r--r-- | activesupport/lib/active_support/cache/mem_cache_store.rb | 18 |
2 files changed, 35 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/cache.rb b/activesupport/lib/active_support/cache.rb index 64394afec4..463cba6cf0 100644 --- a/activesupport/lib/active_support/cache.rb +++ b/activesupport/lib/active_support/cache.rb @@ -87,8 +87,25 @@ module ActiveSupport def delete_matched(matcher, options = nil) log("delete matched", matcher.inspect, options) + end + + def increment(key, amount = 1) + log("incrementing", key, amount) + if num = read(key) + write(key, num + amount) + else + nil + end end + def decrement(key, amount = 1) + log("decrementing", key, amount) + if num = read(key) + write(key, num - amount) + else + nil + end + end private def log(operation, key, options) diff --git a/activesupport/lib/active_support/cache/mem_cache_store.rb b/activesupport/lib/active_support/cache/mem_cache_store.rb index ad220a9c2c..15e2df13b3 100644 --- a/activesupport/lib/active_support/cache/mem_cache_store.rb +++ b/activesupport/lib/active_support/cache/mem_cache_store.rb @@ -48,8 +48,26 @@ module ActiveSupport rescue MemCache::MemCacheError => e logger.error("MemCacheError (#{e}): #{e.message}") false + end + + def increment(key, amount = 1) + log("incrementing", key, amount) + + response = @data.incr(key, amount) + response == Response::NOT_FOUND ? nil : response + rescue MemCache::MemCacheError + nil end + def decrement(key, amount = 1) + log("decrement", key, amount) + + response = data.decr(key, amount) + response == Response::NOT_FOUND ? nil : response + rescue MemCache::MemCacheError + nil + end + def delete_matched(matcher, options = nil) super raise "Not supported by Memcache" |