Questions
Status
Cache stampede protection at scaleHardDesignMeta styleDesignMeta styleHard35 minEdge personalization with cache efficiencyHardDesignShopify styleDesignShopify styleHard45 minRequest coalescing across CDN hierarchyHardDesignNetflix styleDesignNetflix styleHard40 minWrite-back cache for high-frequency countersHardDesignMeta styleDesignMeta styleHard45 minDynamic fair-share rate limiterHardDesignDesignHard45 minMulti-tenant CDN cache isolationHardDesignDesignHard40 minReverse authorization queries at scaleHardDesignGoogle styleDesignGoogle styleHard55 minRate limiter with burst smoothingHardDesignStripe styleDesignStripe styleHard40 minGlobal CDN cache hierarchyHardDesignNetflix styleDesignNetflix styleHard45 minVideo CDN edge storageHardDesignNetflix styleDesignNetflix styleHard45 minDistributed ID sequencerHardDesignDesignHard40 minService mesh for KubernetesHardDesignGoogle styleDesignGoogle styleHard50 minLayer-4 load balancerHardDesignGoogle styleDesignGoogle styleHard45 minHot partition mitigationHardDesignAmazon styleDesignAmazon styleHard40 minMulti-tenant database isolationHardDesignSalesforce styleDesignSalesforce styleHard45 minSocial graph shardingHardDesignMeta styleDesignMeta styleHard45 minEdge bot detectionHardDesignGoogle styleDesignGoogle styleHard45 minEdge cache tiering and purgeHardDesignNetflix styleDesignNetflix styleHard45 minTiered storage with hot/cold placementHardDesignDesignHard40 minRendering strategy for a large content siteHardDesignMeta styleDesignMeta styleHard40 min
Email job queueEasyDesignDesignEasy30 minIn-app notificationsEasyDesignDesignEasy25 minKitchen order screens for a restaurant groupEasyDesignDesignEasy30 minNew listing alerts for saved rental searchesEasyDesignDesignEasy25 minSending orders to a print partnerEasyDesignDesignEasy25 minOrder-dispatch queueMediumDesignDoorDash styleDesignDoorDash styleMedium35 minMulti-channel notification platformMediumDesignDesignMedium40 minPresence system for team chatMediumDesignSalesforce styleDesignSalesforce styleMedium35 minDelayed job queueMediumDesignDesignMedium35 minActivity-digest aggregationMediumDesignDesignMedium40 min3-D Secure payment reconciliationMediumDesignStripe styleDesignStripe styleMedium40 minReal-time location sharingMediumDesignApple styleDesignApple styleMedium40 minLive order tracking and ETAMediumDesignDoorDash styleDesignDoorDash styleMedium40 minAlert routing and deduplicationMediumDesignDesignMedium35 minLog live tail streamingMediumDesignDesignMedium35 minMulti-tenant event fan-outMediumDesignSalesforce styleDesignSalesforce styleMedium40 minDirectory sync serviceMediumDesignMicrosoft styleDesignMicrosoft styleMedium40 minLive DVR and time-shiftMediumDesignComcast styleDesignComcast styleMedium40 minMusic streaming and offline downloadsMediumDesignSpotify styleDesignSpotify styleMedium40 minLive event chat at scaleMediumDesignAmazon styleDesignAmazon styleMedium45 minDelayed job schedulerMediumDesignStripe styleDesignStripe styleMedium40 minNotification batching systemMediumDesignDesignMedium40 minDesign reverse proxy connection poolingMediumDesignDesignMedium35 minWebhook receiver with out-of-order eventsMediumDesignStripe styleDesignStripe styleMedium35 minLive courier trackingMediumDesignDoorDash styleDesignDoorDash styleMedium45 minFootfall dwell analyticsMediumDesignDesignMedium45 minPoison message handlingMediumDesignDesignMedium30 minToken-authorized CDN media deliveryMediumDesignNetflix styleDesignNetflix styleMedium40 minMulti-channel notification orchestrationMediumDesignDoorDash styleDesignDoorDash styleMedium40 minIoT device pub-sub and commandsMediumDesignAmazon styleDesignAmazon styleMedium45 min