System designLevel 2
Security and privacy
Easynot started
Mediumnot started
Hardnot started
StatusFormatCompany style
Easy
Session storeDesignDesign25 minPassword reset by email linkDesignDesign25 minAccess rules for a school grade bookDesignDesign25 minSigned webhooks for an invoicing APIDesignDesign25 minEncrypting answers on a clinic intake formDesignDesign30 minMedium
Log ingest with PII redactionDesign · Capital One styleCapital One styleDesignCapital One style35 minEnterprise dashboarding backendDesignDesign35 minMulti-device session managementDesign · Netflix styleNetflix styleDesignNetflix style35 minOAuth 2.0 authorization serverDesign · Google styleGoogle styleDesignGoogle style40 minAPI key management and revocationDesign · Stripe styleStripe styleDesignStripe style35 minRBAC with delegationDesign · ServiceNow styleServiceNow styleDesignServiceNow style35 minSession revocation across stateless serversDesignDesign40 minOAuth consent and scope managementDesign · Google styleGoogle styleDesignGoogle style40 minTeam file sharingDesignDesign35 minAPI key issuance and revocationDesign · Stripe styleStripe styleDesignStripe style40 minPasswordless authenticationDesign · Apple styleApple styleDesignApple style40 minCAPTCHA challenge serviceDesign · Google styleGoogle styleDesignGoogle style35 minHard
Edge compute JWT validationDesignDesign45 minAccount-takeover and collusion detectionDesign · PayPal stylePayPal styleDesignPayPal style50 minGDPR deletion lineage trackingDesignDesign45 minStateless JWT revocation at edgeDesignDesign45 minSecrets distribution at scaleDesignDesign45 minMulti-tenant data isolationDesign · Salesforce styleSalesforce styleDesignSalesforce style45 minEnterprise SSO federationDesign · Microsoft styleMicrosoft styleDesignMicrosoft style40 minPasskey authentication systemDesign · Apple styleApple styleDesignApple style40 minEncryption and key managementDesign · Amazon styleAmazon styleDesignAmazon style45 minRisk-based step-up authenticationDesign · PayPal stylePayPal styleDesignPayPal style40 minService-to-service authenticationDesign · Microsoft styleMicrosoft styleDesignMicrosoft style45 minService-mesh PKIDesign · Google styleGoogle styleDesignGoogle style45 min