The Little MongoDB Book.pdf

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1、AboutThisBookLicenseTheLittleMongoDBBookbookislicensedundertheAttribution-NonCommercial3.0Unportedlicense.Youshouldnothavepaidforthisbook.Youarebasicallyfreetocopy,distribute,modifyordisplaythebook.However,Iaskthatyoualwaysattributethebooktome,KarlSeguinanddonotuseitforcommercialpurposes.Youcan

2、seethefulltextofthelicenseat:http://creativecommons.org/licenses/by-nc/3.0/legalcodeAboutTheAuthorKarlSeguinisadeveloperwithexperienceacrossvariousfieldsandtechnologies.He'sanexpert.NETandRubydeveloper.He'sasemi-activecontributortoOSSprojects,atechnicalwriterandanoccasionalspeaker.Withrespectto

3、MongoDB,hewasacorecontributortotheC#MongoDBlibraryNoRM,wrotetheinteractivetutorialmonglyaswellastheMongoWebAdmin.Hisfreeserviceforcasualgamedevelopers,mogade.com,ispoweredbyMongoDB.Hisblogcanbefoundathttp://openmymind.net,andhetweetsvia@karlseguinWithThanksToAspecialthankstoPerryNealforlendingm

4、ehiseyes,mindandpassion.Youprovidedmewithinvaluablehelp.Thankyou.LatestVersionThelatestsourceofthisbookisavailableat:http://github.com/karlseguin/the-little-mongodb-book.2IntroductionIt'snotmyfaultthechaptersareshort,MongoDBisjusteasytolearn.Itisoftensaidthattechnologymovesatablazingpace.It'str

5、uethatthereisanevergrow-inglistofnewtechnologiesandtechniquesbeingreleased.However,I'velongbeenoftheopinionthatthefundamentaltechnologiesusedbyprogrammersmoveataratherslowpace.Onecouldspendyearslearninglittleyetremainrelevant.Whatisstrikingthoughisthespeedatwhichestablishedtechnologiesgetreplac

6、ed.Seeminglyover-night,longestablishedtech-nologiesfindthemselvesthreatenedbyshiftsindeveloperfocus.NothingcouldbemorerepresentativeofthissuddenshiftthantheprogressofNoSQLtech-nologiesagainstwell-establishedrelationaldatabases.ItalmostseemslikeonedaythewebwasbeingdrivenbyafewRDBMS'andthenext,fi

7、veorsoNoSQLsolutionshadestablishedthemselvesasworthysolutions.Eventhoughthesetransitionsseemtohappenovernight,therealityisthattheycantakeyearstobecomeacceptedpractice.Theinitialenthusiasmisdrivenbyarelativelysmallsetofdevelopersan