在我的线上环境中，由于应用上对redis数据没有做冷热处理，所以经常会出现redis内存使用率居高不下的情况，一直以来都想知道都是什么样的数据比较消耗redis内存，就好比写一个sql语句放在数据库中运行，看各表占空间的大小情况然后排序下，这看上去蛮简单的一个功能，貌似在redis上还不容易实现，redis-audit工具基本上可以满足类似的需求。下面是简单的安装和使用介绍！

1:安装ruby

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[root@db1 ~]# wget ftp://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.2-p0.tar.gz
[root@db1 ~]# tar -zxvpf ruby-1.9.2-p0.tar.gz
[root@db1 ~]# cd ruby-1.9.2-p0
[root@db1 ruby-1.9.2-p0]# ./configure  --prefix=/usr/local/ruby
[root@db1 ruby-1.9.2-p0]# make && make install
[root@db1 ruby-1.9.2-p0]# cd
[root@redis2 ~]# grep PATH /root/.bash_profile
PATH=$PATH:$HOME/bin:/usr/local/ruby/bin:$PATH
export PATH
[root@redis2 ~]# source /root/.bash_profile

2:安装rubygems

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[root@db1 ~]# wget http://production.cf.rubygems.org/rubygems/rubygems-2.0.7.tgz
[root@db1 ~]# tar zxvf rubygems-2.0.7.tgz
[root@db1 ~]# cd rubygems-2.0.7
[root@db1 rubygems-2.0.7]# ruby setup.rb

3:使用gem安装bundler

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[root@db1 rubygems-2.0.7]# cd
[root@db1 ~]#  wget http://tokyo-m.rubygems.org/gems/bundler-1.3.5.gem
[root@db1 ~]# gem install bundler -l
Successfully installed bundler-1.3.5
1 gem installed
Installing ri documentation for bundler-1.3.5...
Installing RDoc documentation for bundler-1.3.5...

4:安装git

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[root@db1 ~]# cat /etc/yum.repos.d/git.repo
[puias-computational]
name=PUIAS Computational
baseurl=http://puias.math.ias.edu/data/puias/computational/5/x86_64/
enabled=1
gpgcheck=0
[root@db1 ~]# yum -y install git

5:使用git迁出redis-audit源代码，查看redis数据情况

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[root@db1 ~]#  git clone https://github.com/snmaynard/redis-audit.git
Cloning into redis-audit...
remote: Counting objects: 117, done.
remote: Compressing objects: 100% (79/79), done.
remote: Total 117 (delta 39), reused 113 (delta 36)
Receiving objects: 100% (117/117), 17.63 KiB, done.
Resolving deltas: 100% (39/39), done.
[root@db1 ~]# cd redis-audit/
[root@db1 redis-audit]# bundle install
Fetching source index from http://rubygems.org/
Installing redis (3.0.2)
Using bundler (1.3.5)
Your bundle is complete!
Use `bundle show [gemname]` to see where a bundled gem is installed.
[root@db1 redis-audit]# bundle exec ruby redis-audit.rb 192.168.1.13 65430 0 1000
Auditing 192.168.1.13:65430 db:0 sampling 1000 keys
Getting a list of all 358 keys...
Auditing 358 keys...
35 keys sampled - 10% complete - 2013-08-23 14:46:15 +0800
70 keys sampled - 20% complete - 2013-08-23 14:46:15 +0800
105 keys sampled - 29% complete - 2013-08-23 14:46:15 +0800
140 keys sampled - 39% complete - 2013-08-23 14:46:15 +0800
175 keys sampled - 49% complete - 2013-08-23 14:46:16 +0800
210 keys sampled - 59% complete - 2013-08-23 14:46:16 +0800
245 keys sampled - 68% complete - 2013-08-23 14:46:16 +0800
280 keys sampled - 78% complete - 2013-08-23 14:46:16 +0800
315 keys sampled - 88% complete - 2013-08-23 14:46:17 +0800
350 keys sampled - 98% complete - 2013-08-23 14:46:17 +0800
DB has 358 keys
Sampled 464.34 MB of Redis memory
Found 12 key groups
==============================================================================
Found 23 keys containing strings, like:
ShoppingCart_6d7cfd49f68043669f30133dc5d983a9, ShoppingCart_177600d6b78d46b9990ab5f6dc5711a6, ShoppingCart_a58d6bd82e8b4e7eb55d874c831b66de,
ShoppingCart_6405daf3e0b042f580417e3100887871, ShoppingCart_8d6ff3326eaf46bc8b2e24fb9fad6f87, ShoppingCart_0179c7f4f7c84ab5bd387b068dd1632f,
ShoppingCart_93637af307fa47038db62e146351f373, ShoppingCart_0c2f7ed9663e432f8d9cdba89a186650, ShoppingCart_c08edc03c3db43c580d66593211da03f,
ShoppingCart_76069203a18c4ecba40f713b85ac24d9
These keys use 0.0% of the total sampled memory (4.33 kB)
None of these keys expire
Average last accessed time: 47 minutes, 40 seconds - (Max: 47 minutes, 40 seconds Min:47 minutes, 40 seconds)
==============================================================================
Found 83 keys containing strings, like:
Class:TrainingOnline;UsrId:c99b93261e5642e4995e313174bc1c46;trnId:9f0ee4743e7f40c085247c14eb5eeae9;,
Class:TrainingOnline;UsrId:d6a7adaea2ea4b30907de24de0047ea6;trnId:4fb1eedb88b14d45aba927492d1c8713;,
Class:TrainingOnline;UsrId:32cdc62b1cdb4307888c6ad2fd53b996;trnId:9f0ee4743e7f40c085247c14eb5eeae9;,
Class:TrainingOnline;UsrId:7d4d033f68374ee49f12c60620ffe651;trnId:1b0ae6754ccf4733add782f9a11bd0ef;,
Class:TrainingOnline;UsrId:ecfe8652fc9d4177bf782701d764f19d;trnId:26b9d13727694fc69d3fb31a6a8d3e0b;,
Class:TrainingOnline;UsrId:7f36ff25369b4e6ba088c235f05b557c;trnId:8b3d8c8c2ab448d585ed7c4909292948;,
Class:TrainingOnline;UsrId:9d2e29e4a765495f99f27f8c703f298b;trnId:4fb1eedb88b14d45aba927492d1c8713;,
Class:TrainingOnline;UsrId:9b8a5fede6b049a0921ba093ba8009a6;trnId:5a7bcfa6c4c24e42b0e43b5c58f70fc1;,
Class:TrainingOnline;UsrId:76069203a18c4ecba40f713b85ac24d9;trnId:cda6b6e1c3fc417bb7e2e27c998a5862;,
Class:TrainingOnline;UsrId:785340fe2d1b4136ad6eb2cb4c85d601;trnId:ec44de45aae64487a93da3b522760d4c;
These keys use 0.0% of the total sampled memory (7.21 kB)
None of these keys expire
Average last accessed time: 47 minutes, 40 seconds - (Max: 47 minutes, 40 seconds Min:47 minutes, 40 seconds)
==============================================================================
Found 1 keys containing hashs, like:
yd.mvc.Public.SsoModels.SsoTemp
These keys use 0.01% of the total sampled memory (28.46 kB)
None of these keys expire
Average last accessed time: 47 minutes, 40 seconds - (Max: 47 minutes, 40 seconds Min:47 minutes, 40 seconds)
==============================================================================
Found 2 keys containing hashs, like:
yd.Model.Public.OnlineCustomer, yd.Model.Public.UserHasAction
These keys use 0.02% of the total sampled memory (74.29 kB)
None of these keys expire
Average last accessed time: 24 minutes, 10 seconds - (Max: 47 minutes, 40 seconds Min:40 seconds)
==============================================================================
Found 1 keys containing hashs, like:
yd.Common.Monitoring.MvcRun
These keys use 0.13% of the total sampled memory (597.7 kB)
None of these keys expire
Average last accessed time: 10 seconds - (Max: 10 seconds Min:10 seconds)
==============================================================================
Found 2 keys containing hashs, like:
yd.Util.MethodRun, yd.Util.WcfKeep
These keys use 0.26% of the total sampled memory (1.21 MB)
None of these keys expire
Average last accessed time: 15 seconds - (Max: 20 seconds Min:10 seconds)
==============================================================================
Found 13 keys containing hashs, like:
yd.Model.Stu.StudyCourseHistory, yd.Model.Sso.Userlink, yd.Model.Sys.GlobalConfig, yd.Model.Sys.ConfigService, yd.Model.Sys.ServiceType, yd.Model.Sso.Domain,
yd.Model.Stu.TestTotal, yd.Model.Stu.TestRecord, yd.Model.Stu.StudyNote, yd.Model.Sta.StarStudent
These keys use 3.54% of the total sampled memory (16.42 MB)
None of these keys expire
Average last accessed time: 47 minutes, 40 seconds - (Max: 47 minutes, 40 seconds Min:47 minutes, 40 seconds)
==============================================================================
Found 7 keys containing hashs, like:
yd.Model.Wot.WorkStandardConfig, yd.Model.Wot.TeacherAttention, yd.Model.Wot.TrainingWork, yd.Model.Wot.WorkStandard, yd.Model.Wot.WorkStudent,
yd.Model.Wot.WorkType, yd.Model.Wot.StudentWork
These keys use 4.51% of the total sampled memory (20.92 MB)
None of these keys expire
Average last accessed time: 47 minutes, 40 seconds - (Max: 47 minutes, 40 seconds Min:47 minutes, 40 seconds)
==============================================================================
Found 19 keys containing hashs, like:
yd.Model.Cla.AssessTemplateConfig, yd.Model.Cla.WorkStandard, yd.Model.Cla.NewpaperTemplate, yd.Model.Cla.TeacherWorkDetail, yd.Model.Cla.AssessConfig,
yd.Model.Cla.OnlineDiscuss, yd.Model.Cla.StudentAssess, yd.Model.Cla.GrowArchive, yd.Model.Cla.LearningResource, yd.Model.Cla.StudentFileConfig
These keys use 11.94% of the total sampled memory (55.43 MB)
None of these keys expire
Average last accessed time: 47 minutes, 40 seconds - (Max: 47 minutes, 40 seconds Min:47 minutes, 40 seconds)
==============================================================================
Found 28 keys containing hashs, like:
yd.Model.Asm.SysinfoConfigType, yd.Model.Asm.User, yd.Model.Ame.CardUseApply, yd.Model.Asm.BranchExpand, yd.Model.Ame.CardOperate, yd.Model.Ame.CardMoney,
yd.Model.Ame.CardSellerDetail, yd.Model.Asm.FavoritesType, yd.Model.Ame.Card, yd.Model.Ame.CardSeller
These keys use 12.77% of the total sampled memory (59.32 MB)
None of these keys expire
Average last accessed time: 46 minutes, 5 seconds - (Max: 47 minutes, 40 seconds Min:3 minutes, 30 seconds)
==============================================================================
Found 22 keys containing hashs, like:
yd.Model.Tra.InvoicePrintDetail, yd.Model.Tra.TrainingYear, yd.Model.Tra.InvoicePrint, yd.Model.Tra.TrainingConfigType, yd.Model.Tra.StudentStudy,
yd.Model.Tra.CourseAndTeacher, yd.Model.Tra.SendProcess, yd.Model.Tra.StudentDredge, yd.Model.Tra.StudentDredgeHistory, yd.Model.Tra.TrainingMenu
These keys use 15.74% of the total sampled memory (73.09 MB)
None of these keys expire
Average last accessed time: 41 minutes, 36 seconds - (Max: 47 minutes, 40 seconds Min:5 minutes, 10 seconds)
==============================================================================
Found 157 keys containing hashs, like:
yd.Model.Crm.LibraryType, yd.Model.Wot.StandardConfig, yd.Model.Tra.TrainingTemplate, yd.Model.Ctl.CodingSysinfo, yd.Model.Bbs.UserDynamicReply,
yd.Model.Asm.Contact, yd.Model.Buy.OfflineRecord, yd.Model.Cts.TimingTaskLog, yd.Model.Cla.Assess, yd.Model.Sys.ArgeService
These keys use 51.09% of the total sampled memory (237.25 MB)
None of these keys expire
Average last accessed time: 43 minutes, 18 seconds - (Max: 47 minutes, 50 seconds Min:10 seconds)
==============================================================================
Summary
---------------------------------------------------+--------------+-------------------+---------------------------------------------------
Key                                                | Memory Usage | Expiry Proportion | Last Access Time                              
---------------------------------------------------+--------------+-------------------+---------------------------------------------------
yd.Model.Crm.LibraryType                           | 51.09%       | 0.0%              | 10 seconds                                    
yd.Model.Tra.InvoicePrintDetail                    | 15.74%       | 0.0%              | 5 minutes, 10 seconds                         
yd.Model.Asm.SysinfoConfigType                     | 12.77%       | 0.0%              | 3 minutes, 30 seconds                         
yd.Model.Cla.AssessTemplateConfig                  | 11.94%       | 0.0%              | 47 minutes, 40 seconds                        
yd.Model.Wot.WorkStandardConfig                    | 4.51%        | 0.0%              | 47 minutes, 40 seconds                        
yd.Model.Stu.StudyCourseHistory                    | 3.54%        | 0.0%              | 47 minutes, 40 seconds                        
yd.Util.MethodRun                                  | 0.26%        | 0.0%              | 10 seconds                                    
yd.Common.Monitoring.MvcRun                        | 0.13%        | 0.0%              | 10 seconds                                    
yd.Model.Public.OnlineCustomer                     | 0.02%        | 0.0%              | 40 seconds                                    
yd.mvc.Public.SsoModels.SsoTemp                    | 0.01%        | 0.0%              | 47 minutes, 40 seconds                        
Class:TrainingOnline;UsrId:c99b93261e5642e4995e313 | 0.0%         | 0.0%              | 47 minutes, 40 seconds                        
ShoppingCart_6d7cfd49f68043669f30133dc5d983a9      | 0.0%         | 0.0%              | 47 minutes, 40 seconds                        
---------------------------------------------------+--------------+-------------------+---------------------------------------------------

从实际使用的情况上看，当要分析采样的数据较多时，会出现timeout报错信息，目前尚不清楚如何处理！

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