It focuses on smooth (‑ mulus ‑) user experience while keeping security tight – exactly the kind of “good feature” many products need.
Feature: Smart Token Lifecycle Management (STLM) 1. Goal / Value Proposition | What it does | Why it matters | |------------------|--------------------| | Automatically refreshes access tokens before they expire, without interrupting the user. | Users stay signed‑in (“kangen di”) and never see “session expired” pop‑ups. | | Graceful fallback to a stored refresh‑token when the network is unavailable, allowing limited offline usage. | Improves reliability for users on flaky connections (common in many regions, including Indonesia). | | Detects token tampering / replay attacks using a short‑lived nonce and server‑side verification. | Keeps the system secure even when tokens are stored on the client device. | | Provides a clear “Token Health Dashboard” for admins and power‑users to monitor token status, expiration, and revocation events. | Increases transparency and helps support teams quickly diagnose authentication issues. | | Supports multiple token formats (JWT, opaque opaque, custom “toket”) via an extensible plug‑in architecture. | Future‑proofs the product for any new token standard you might adopt. | 2. High‑Level Architecture +----------------------+ +---------------------------+ +----------------------+ | Client (Web / App) | <--> | Token Management SDK | <--> | Auth/Identity Server| | - Stores token(s) | | - Auto‑Refresh logic | | - Issues access/ | | - Makes API calls | | - Offline cache manager | | refresh tokens | +----------------------+ +---------------------------+ +----------------------+
Token Management SDK (installed in the client)
Intercepts every outbound request. Checks token expiry ( exp claim or server‑provided TTL). Triggers a silent refresh request only when needed (e.g., 5 minutes before expiry). It focuses on smooth (‑ mulus ‑) user
Offline Cache Manager
Persists the latest valid token in encrypted storage (e.g., IndexedDB, Secure Enclave, Android Keystore). When the network is down, the SDK serves cached data and flags the session as “offline‑mode”.
Auth/Identity Server Enhancements
Returns refresh_token_expires_in and revocation_endpoint fields. Accepts a nonce in the refresh request and validates it against a server‑side store to prevent replay.
3. Detailed Flow (Pseudo‑code) // tokenManager.refreshIfNeeded() async function maybeRefresh() { const token = await storage.get('access_token'); const expiresAt = decodeJWT(token).exp * 1000; // ms
// 1️⃣ If token still valid for > 5 min → do nothing if (Date.now() + 5 * 60 * 1000 < expiresAt) return token; | Users stay signed‑in (“kangen di”) and never
// 2️⃣ If we are offline → return cached token (still usable for read‑only ops) if (!navigator.onLine) { console.warn('Offline: using stale token'); return token; }
// 3️⃣ Perform silent refresh const refreshToken = await storage.get('refresh_token'); const nonce = crypto.randomUUID(); // unique per request