Memory & Keychain

let cache = PrismMemoryStore(
    maxEntries: 1000,
    defaultTTL: 600 // 10 min
)

// Standard CRUD
try await cache.save(user, forKey: "user-42")
let user = try await cache.load(User.self, forKey: "user-42")

// Per-entry TTL
try await cache.save(otp, forKey: "otp", ttl: 30) // 30 sec

let stats = await cache.statistics()
print("Hit rate: \(stats.hitRate)")  // 0.0–1.0
print("Hits: \(stats.hits)")
print("Misses: \(stats.misses)")
print("Evictions: \(stats.evictions)")
print("Expirations: \(stats.expirations)")

let count = await cache.count()

let keychain = PrismKeychainStore(
    service: "com.myapp.auth",
    accessGroup: "TEAM.com.myapp.shared" // optional
)

// Store credentials
try keychain.save("Bearer abc123", forKey: "accessToken")
try keychain.save(credentials, forKey: "oauth") // any Codable

// Retrieve
let token = try keychain.load(String.self, forKey: "accessToken")

// Check existence
if try keychain.exists(forKey: "accessToken") { ... }

// Remove
try keychain.delete(forKey: "accessToken")
try keychain.clear() // remove all items for this service