Questions
Status
Team presence detectionEasyDesignDesignEasy25 minVanity redirect managerEasyDesignDesignEasy25 minLive polls during a webinarEasyDesignDesignEasy25 minVirtual queue for theme park ridesEasyDesignDesignEasy30 minShared grocery list that syncs between phonesEasyDesignDesignEasy30 minWebSocket price-tick serviceMediumDesignCoinbase styleDesignCoinbase styleMedium35 minReal-time game leaderboardMediumDesignDesignMedium35 minTyping indicators and read receiptsMediumDesignMeta styleDesignMeta styleMedium30 minPaid media CDN authorizationMediumDesignNetflix styleDesignNetflix styleMedium35 minFleet management backendMediumDesignTesla styleDesignTesla styleMedium40 minProximity marketing geofenceMediumDesignStarbucks styleDesignStarbucks styleMedium40 minCollaborative cursor presenceMediumDesignFigma styleDesignFigma styleMedium40 minImage and video deliveryMediumDesignMeta styleDesignMeta styleMedium40 minRead-replica routing layerMediumDesignDesignMedium35 minReal-time driver-rider matchingHardDesignUber styleDesignUber styleHard45 minExactly-once charge executionHardDesignStripe styleDesignStripe styleHard45 minReal-time collaborative editingHardDesignGoogle styleDesignGoogle styleHard50 minCollaborative whiteboard syncHardDesignFigma styleDesignFigma styleHard45 minMultiplayer state sync backendHardDesignDesignHard50 minGlobal payments data residencyHardDesignStripe styleDesignStripe styleHard50 minSpatial indexing driver matchingHardDesignUber styleDesignUber styleHard45 minWebSocket load balancingHardDesignDesignHard45 minLive streaming segment deliveryHardDesignAmazon styleDesignAmazon styleHard50 minGlobal traffic failoverHardDesignNetflix styleDesignNetflix styleHard45 minCode search indexingHardDesignMicrosoft styleDesignMicrosoft styleHard50 minCard payment authorization and routingHardDesignStripe styleDesignStripe styleHard50 minWallet balance with authorization holdsHardDesignUber styleDesignUber styleHard50 minDesign a transaction reconciliation systemHardDesignStripe styleDesignStripe styleHard55 minRider-to-driver matchingHardDesignUber styleDesignUber styleHard45 minOrder batching and courier assignmentHardDesignDoorDash styleDesignDoorDash styleHard50 minGPS ingestion pipelineHardDesignUber styleDesignUber styleHard45 minMap matchingHardDesignGoogle styleDesignGoogle styleHard50 minGeospatial datastore shardingHardDesignUber styleDesignUber styleHard45 minSurge pricingHardDesignUber styleDesignUber styleHard45 minLast-mile route planningHardDesignAmazon styleDesignAmazon styleHard50 minTrip history and trajectory replayHardDesignTesla styleDesignTesla styleHard45 minBatch geospatial analyticsHardDesignUber styleDesignUber styleHard50 minShared-ride matchingHardDesignUber styleDesignUber styleHard50 minRide-hailing trip state partitioningHardDesignUber styleDesignUber styleHard50 minCell-based multi-tenant routingHardDesignAmazon styleDesignAmazon styleHard45 minReal-time camera effectsHardDesignMeta styleDesignMeta styleHard45 minGlobal media ingestHardDesignMeta styleDesignMeta styleHard50 minMultiplayer game state syncHardDesignMicrosoft styleDesignMicrosoft styleHard50 minExactly-once payment processingHardDesignStripe styleDesignStripe styleHard55 minOffline-first collaborative editingHardDesignFigma styleDesignFigma styleHard55 minWebSocket gateway fleetHardDesignMeta styleDesignMeta styleHard50 minReal-time location matchingHardDesignUber styleDesignUber styleHard50 minCross-shard transactional atomicityHardDesignStripe styleDesignStripe styleHard50 minLarge-file CDN cachingHardDesignDesignHard45 minPayment cascading without double chargeHardDesignStripe styleDesignStripe styleHard45 min