Basic Tutorials of Redis(2) - String
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This post is mainly about how to use the commands to handle the Strings of Redis.And I?will show you both the native commands?and the usage of?the StackExchange.Redis.The?version of Redis is 3.2.3 and the vesion of StackExchange.Redis is 1.1.604-alpha.Yeah,You are right,I will show you by using a dotnet core console app.Maybe you will ask me that why don't you use the ServiceStack.Redis??The reasons why I choose StackExchange.Redis are as follow: 1.I am a poor man so that I can not pay for the License of ServiceStack.Redis 2.The opreations of this two drive are vary easy,but I like to use the StackExchange.Redis. 3.Open source code OK,let's begin.
First of all,we should start the service of redis.We can not do anything without the running?service.And use the ???to enter the?client.Then choose the second database for this?tutorial.
How many commands belong to Strings?You can find the answer in? and I use Xmind to make a picture as follow: ?
Up to today,there are 24 commands that we can use to handle Strings.But I will choose some of them to show you in this tutorials .Many commands are very useful of Strings,and I will Introduce them at the future tutorials. The first thing we should take care is that how to store the data? If you learned?Memcached before,you can compare with them. They have some common features.But there?are no relationship between Redis and Memcached.In Redis,you can use the command set to?store the data you want to save,and the command get can help you to find out the data you?stored.For example,I set a key named name?with a value catcher,after successffully stored,the?client will return you a OK message.And using the get command with the key's name you can?get the value of this key. name
more k/v?Don't worry,there are also some? commands(mset,mget) can handle multi k/v which?can help you to finish some difficult jobs.The usage of them look like this: mset age
It's very good for the flexible commands.The next command is append,which you may?often use in the program languages to handle?the strings,such as C#'s StringBuilder.After?creating an instance of StringBuilder(sb),we can use sb.Append to append many strings to?sb.Naturally,command append can do this too.As you can see,I appended wong to catcher so I? append name wong
For Relational Database,when designing a table,we often set the primary key increasing?automatically.How can we do in Redis?The creator?of Redis already considerred this?situation.All of us can use command incr to increase the value by 1 automatically,and use? command? The command?incrby can?assign the value to increase.
The same as?Memcached,Redis can also set the expired time when some of you want to use Redis?
set the?value and?expiration of a key.For an instance,I set a?key named tmp for saving 5s. setex tmp tmp
Stop introducing more,the usage of other commands you can find out in the site of Redis. Now,I will show you the same commands above by using C#.
ConnectionMultiplexer redis = ConnectionMultiplexer.Connect(
IDatabase db = redis.GetDatabase(
db.StringSet(, Console.WriteLine(.Format(,db.StringGet(
dic = Dictionary
The handle of StackExchange.Redis is vary vary similar with the native opreation.The most?
the?redis?server.You?should sure that your debug?environment can visit the CentOS in your Vmware.When you debug the above code, you will?get the below result.
The next post of this series is the basic opreation of Hash in Redis. （编辑：李大同） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
