2.MONGODB installation Configuration Simple LearningConfiguring the database path allows the MONGO command to perform an interactive operation: Start the server first, and perform an interactive operation with a CMD1) Increase and deletion checkInsert Method: Dp.person.insert ({"Name": "Jack", "Age": ())Find Method:db.person.find (); Db.person.find ({"Name": Joe}) 1. $type matched filter: db.person. Find " name" : { $type : 2 2. limit, Skip:db person. (). Limit1 (1) 3.sort ():1 Ascending,-1 descending db. Person. Find(). Sort({"_id":-1}) Update method: Db.person.update ({"Name": "Joe"},{"name": "Joe", "Age": ())Remove Method: Db.person.remove ({"Name": "Joe"})2) Create database:use database_name; Delete database:db. Dropdatabase(); Show DBS: View So database 3) View the collection in the database: show tables, delete this collection: Db. Collection name. Drop () 4) index creation: db. Col. Ensureindex ({ "title" :1 5) aggregation operation: dbmycol. ([{ $group : { _id : "$by _user" , num_tutorial : { $sum : 1}}]) =
Select By_user, COUNT (*) from MyCol GROUP by By_user
6) How to use in Java: http://www.runoob.com/mongodb/mongodb-java.html1. Lead jar Package
2. Connect to the database//Connect MongoDB service, connect database mongoclient Mongoclient = new mongoclient ( "localhost" , 27017 mongodatabase mongodatabase = mongoclient. Getdatabase("MyCol"); 7) Visual Session management tool rockmongo:http://download.csdn.net/download/abc_key/7482165 download and easy to use3.redis installation Configuration Simple LearningRedis runs in memory but can be persisted to the hard disk so that it can do a lot of internal complexityOpen cmd Window server side redis-server.exe redis.windows.conf; open cmd window opening client: redis-cli.exe-h 127.0.0.1-p 63791.redis configuration :config get *, can be configured to touch a configuration item 2. Basic operation: Store data in key-value pairs1) string:set name "Xiaoping"; get name; a key can store up to 512MB2) Hash: Each hash can store 2 of the 32-second-key-value pairsHset (set hash one field) Hget (GET)Hmset (Set hash multiple fields) Hmget (GET)3) List: can store up to 232-1 elements: save one to one key at a timecontinuous insertion of data: Lpush user3 xiaoping;lpush user3 laoli;lpush user3 Xiaowangget the key value part value collection: Lrange user3 14) Set: can store up to 232-1: save one to one key at a timecontinuous insertion of data: Sadd user4 xiaoping;sadd user4 Laoli;get the key value part value collection: Smembers user45) Zset: ordered set;Zset members are unique, but fractions (score) can be duplicated: Zadd key score member continuous insertion of data: Zadd user5 0 xiaoping;zadd user5 0 laoli;zadd user5 0 XiaopingSort by fractions gets the value of the specified range key ordered collection Zrangebyscore User5 03. Many operations for keys: http://www.runoob.com/redis/redis-keys.html Using redis:http://www.runoob.com/redis/redis-java.html in 4.java 5. Visualization tool: Redis Management platform http://www.liqucn.com/rj/817600.shtml
Mongodb,redis Simple Learning
