MongoDB ????? ?? ?? ? ???? ???? ??
cappedCollectionsInMongoDBProvideEfficientLoggingByAutomicallyExpiringOldRecords, High-ThroughputinsertsAndinsertion-dorderConsistency? ?????
Sep 18, 2025 am 02:57 AM
MongoDB?? ?? ??? ????? ??
useProperIndexesonQuery, ?? ? ???? ??, CompoundIndexeswithequeforeRangefields, andavoidover-indexing? ?????
Sep 17, 2025 am 08:59 AM
MongoDB? ?? ???? ???? ??
?? : MongoDB? ???? ??? ?? ???? ????? ??? ??? ??? ????? ?? ???? ???? ?? ?? ??? ???? ???? ?? ??? ???????. ??, ???? ??? ????? : ??, ???, ?? _at ?? ?? ??? ?? ? ?? ?? ??; FindOneandupdate? ?? ???? ??? ?? ??? ???? ??? ??? ???? ? ?? ? ??????. ?? ??? ??? ?? Composite index and created_at? ?????. ??? ??? ????? ???? ?? ??? ???? ?? ??? ???? ??? ??? ?? ?? ????? ?????.
Sep 17, 2025 am 08:20 AM
MongoDB?? ?? ??? ??? TTL ??? ?? ??
TTL ???? ?? ? ??? ???? ??? ? ??? ??, ?? ? ?? ?? ?? ???? ?????. ?? ??? ???? ??????, expiregterseconds? ??? ??? ??? ????? ?????? ???? ???? ????? 60 ??? ?? ??? ?????.
Sep 16, 2025 am 01:28 AM
?? ?? ??? ?? MongoDB ?? ??? ??????
mongodb ?? ?? ?? ??? ???? ???? ?? ( "executionStats")? ??????. ??? TotalDocsexAmined? TotalDocSreturned?? ?? ??? ?? ?? ????. 2. CollScan? ?? ??? ??? ???? ???? ????????. 3. ?? ? ??? ?? ??? ?? ? ??? ???? ?? {status : 1, createat : -1}? ?? ?? ???? ?? ???????. 4. ExecutionTimemillis? 50-100ms? ????? ???? ???????? ?? ??? ???? ????. 5. Indexonly? ?? ??? ?? ??? ??????.
Sep 16, 2025 am 12:11 AM
MongoDB?? ?? ???? ???? ??? ??? ???? ??
ChangestreamsInMongoDBenAblereal-timemonitoringofdatachangesacrosscollection, ??????, ??????, ordeployments, ?? ??? ?????. ?????
Sep 15, 2025 am 03:23 AM
MongoDB?? ?? ??? ????? ???? ??
? : ??? ?? ??? ??? ??? ???? ?? ?????. ?? ???? ??? ?? ????? ?????. ??? ? ??????? ?? ?? ?? ??? ?????. ??? ??? ?? ???? ???? ??????? ???? ?? ??? ????? ?? ??? ?? ??? ?? ??? ???? ??? ?? ?? ??? ???? ?? ?????????.
Sep 15, 2025 am 03:20 AM
MongoDB?? ??? ??? ????? ??
? : MongoDB ??? ?? ????? WiredTiger ??, ??? ? ??? ? ???? ????? ???? ??? ?????. ?????, ???? WiredTigercChaceSizeGB? ???? ??? ?? ??? ???, OS ??? ?? ?? ???? ???, ??? ??? ??? ?? ?? ???? ????, Mongostat ? Top? ?? ??? ?? ??? ??? ?????? ???? ????? ????? ?????.
Sep 14, 2025 am 04:20 AM
Spark? MongoDB ???? ???? ??
ThemondoDBConnectorForsparkIntegratesmongodbwithApparkForlArge-scaleAnalyticsandetl.2.
Sep 13, 2025 am 06:29 AM
?? ??? ???? ???? ?? MongoDB GRIDFS ??
GRIDFS? MongoDB? 16MB ??? ?? ??? ??? ??? ?? ??????. ??? 255kb ???? ??? ? ??? fs.files (?? ???)? fs.Chunks (??? ??)? ?????. ???? ??? ? ????, ?? ?? ? ?? ?? ???? ???? ??????? ???? ??????? ????? ?????. 1. GRIDFS? ???? MongoDB ????? ?? GRIDFSBUCKET? ??? OpenUploadStream? ???? ??? ????????. 2. ???? ? ? OpenDownLoadStreamByName? ???? ???? ?????? ?????. 3. ???? ???? ?? ??? ?? ? ? ????.
Sep 13, 2025 am 06:02 AM
MongoDB?? ?? ???? ???? ????? ??
ModelSocialnetworkDatainMongodbby-ProcizingQueryPatternsovernormalization.2.embedfrequentlyCcessed, BoundedDatalikeCommentsinpostsporperformance.3. ReferencelArgeorHigh-volumerelationshipslikelikesandfollowerventDocumentBloat.4.storeusFollow
Sep 12, 2025 am 12:31 AM
??? ??? MongoDB? ???? ??
mongodbsupportsreal-timeanalyticsthroughchangestreamsforimmedataingataingestion, enable-reactiveupdatestostodashboardsoralerts.itsaggregationpipelineallowson-re-flyanalysis? ?? $ match, $ group ? $ dateTruncferfortime ?? ?? sights.Properschems
Sep 12, 2025 am 12:15 AM
??? ???? ?? MongoDB? ????? ??
OptimizEmongoDBforread-HeavyWorkLoadSByimplementingTargetEdEdexes, refficientQueryExecution? ????, Distributively.First, createCompoundEdexestaLeordToHigh-requencyQueries, OrderfieldsByequality, STOR, Andrange; UsecoveredqueriesSandre
Sep 11, 2025 pm 03:05 PM
MongoDB ????? ???? ???? ??
MongoDB? DocumentValidation? ????? ??? ???? ????, ??? ???? ?? ?? ??, ?? ? ?? ??? ????, $ ? $ ??, $ regex ?? ?? ???? ????? ???? ? ? ??? ? ????. ??? ??? ?? ?? ??? ??? ? ????. ValidationLevel? ?? ??? ???? Collmod? ?? ??? ????? ?? ? ? ????.
Sep 11, 2025 pm 12:28 PM
?? ??
Undress AI Tool
??? ???? ??
Undresser.AI Undress
???? ?? ??? ??? ?? AI ?? ?
AI Clothes Remover
???? ?? ???? ??? AI ?????.
Stock Market GPT
? ??? ??? ?? AI ?? ?? ??
?? ??
??? ??
vc9-vc14(32+64??) ??? ????? ??(?? ??)
phpStudy ??? ??? ??? ????? ??? ???????.
VC9 32??
VC9 32?? phpstudy ?? ?? ?? ??? ?????
PHP ????? ?? ?? ?? ??
Programmer Toolbox v1.0 PHP ?? ??
VC11 32??
VC11 32?? phpstudy ?? ?? ?? ??? ?????
SublimeText3 ??? ??
??? ??, ???? ?? ????.
