Learn Java Authentication Pattern

User Identity Domain Model untuk Java authentication system production-grade: account, person, subject, tenant, credential, authenticator, session, device, recovery, risk signal, audit event, lifecycle state, invariant, schema, dan service boundary.

Password Authentication Pattern

Password Authentication Pattern untuk Java system production-grade: registration, login, password change, reset, lifecycle state, enumeration defense, rate limiting, abuse control, audit, Spring/Jakarta implementation, invariant, dan failure mode.

Password Storage & Verification

Password Storage & Verification untuk Java production-grade: Argon2id, BCrypt, PBKDF2, salt, pepper, parameter tuning, DelegatingPasswordEncoder, rehash strategy, legacy migration, verification pipeline, dan operational failure mode.

Login Flow as State Machine

Login Flow as State Machine untuk Java production-grade: authentication attempt lifecycle, account state, credential verification, MFA challenge, session issuance, failure handling, audit, concurrency, dan invariant desain.

Account Enumeration & Rate Limiting

15 min

Account Enumeration & Rate Limiting untuk Java authentication production-grade: generic response, timing resistance, synthetic verification, multi-dimensional throttling, lockout trade-off, Redis/PostgreSQL implementation, Spring/Jakarta integration, dan abuse observability.

Session Authentication Pattern

Session Authentication Pattern untuk Java production-grade: stateful login, HttpSession, SecurityContext, session id rotation, timeout, logout semantics, concurrent session, failover, observability, dan failure modes.

Cookie Security & Browser Auth

11 min

Cookie Security & Browser Auth untuk Java authentication: HttpOnly, Secure, SameSite, Domain, Path, cookie prefix, CSRF, CORS, Origin boundary, SPA/BFF pattern, logout cookie deletion, Spring/Jakarta implementation, dan failure modes.

Session Store Design

Session Store Design untuk Java authentication: in-memory, sticky session, Redis, database, clustered session, session indexing, TTL, revocation, failover, Spring Session, Servlet/Jakarta implementation, observability, dan failure modes.

Token Authentication Pattern

Token Authentication Pattern untuk Java authentication: bearer token, JWT, opaque token, reference token, token extraction, validation pipeline, Spring Security Resource Server, JAX-RS filters, claim design, transport, failure modes, dan decision matrix.

JWT Production-Grade Usage

JWT Production-Grade Usage untuk Java authentication: JWS, JWE, claims, issuer, audience, JWK, key rotation, algorithm allowlist, token confusion, Spring Security JwtDecoder, JAX-RS validation, dan failure modes.

Token Lifecycle & Revocation

Token Lifecycle & Revocation untuk Java authentication: access token, refresh token, expiry, rotation, token family, reuse detection, revocation endpoint, introspection, logout semantics, Redis/PostgreSQL design, dan incident runbook.

API Key Authentication Pattern

API Key Authentication Pattern untuk Java: client credential, key format, entropy, lookup prefix, hashed storage, secret vault, validation pipeline, scope, tenant binding, rotation, revocation, rate limiting, observability, Spring Security, JAX-RS, dan production runbook.

HMAC Request Signing Pattern

HMAC Request Signing Pattern untuk Java authentication: proof-of-possession, canonical request, signed headers, timestamp, nonce, replay window, payload hash, constant-time verification, key rotation, Spring/JAX-RS filters, webhook verification, testing, performance, dan production failure modes.

Mutual TLS Authentication Pattern

Mutual TLS Authentication Pattern untuk Java systems: client certificate authentication, certificate-bound identity, TLS termination, service identity, SPIFFE/SPIRE concepts, Java SSLContext, Spring Security, JAX-RS, gateway integration, revocation, rotation, observability, testing, dan production failure modes.

OAuth 2.x Mental Model

8 min

OAuth 2.x Mental Model untuk Java engineers: delegated authorization vs authentication misuse, actors, grant types, tokens, scopes, audience, consent, authorization server, resource server, client types, PKCE, OAuth 2.1 direction, security BCP, Spring Security, Jakarta/JAX-RS integration, dan failure modes.

Authorization Code + PKCE

Authorization Code + PKCE untuk Java engineers: browser login, mobile, SPA, backend-for-frontend, redirect URI, state, nonce, code verifier, token exchange, session creation, Spring Security, Jakarta/JAX-RS integration, dan failure modes.

Client Credentials Flow

11 min

Client Credentials Flow untuk Java engineers: machine-to-machine authentication, service accounts, client authentication, token acquisition, caching, scopes, audience, secret rotation, Spring Security OAuth2 Client, JAX-RS integration, dan production failure modes.

OpenID Connect Authentication

OpenID Connect authentication untuk Java engineers: OAuth vs OIDC, ID Token, UserInfo, discovery, nonce, state, account linking, session establishment, Spring Security OAuth2 Login, JAX-RS callback handling, logout, multi-tenant providers, dan production failure modes.

SSO & Federated Login

SSO dan federated login untuk Java engineers: identity provider, service provider/relying party, OIDC, SAML 2.0, metadata trust, tenant routing, identity brokering, JIT provisioning, attribute mapping, logout, deprovisioning, Spring Security SAML/OIDC, dan enterprise failure modes.

Keycloak Integration Pattern

16 min

Keycloak integration pattern untuk Java enterprise systems: realm, client, client scope, protocol mapper, role mapping, authentication flow, event, token validation, Spring Security, JAX-RS/Jersey, multi-tenant realm strategy, automation, observability, dan production failure modes.

Custom Identity Provider Pattern

16 min

Custom Identity Provider pattern untuk Java engineers: kapan membangun IdP sendiri, kapan tidak, minimal viable authorization server/OIDC provider, endpoint contract, key management, token issuance, login session, client registry, consent, federation, compliance, testing, observability, dan failure modes.

MFA & Step-Up Authentication

MFA dan step-up authentication untuk Java engineers: factor model, authenticator lifecycle, assurance level, TOTP, OTP, recovery codes, trusted device, adaptive challenge, Spring/Jakarta implementation, data model, observability, testing, dan failure modes.

WebAuthn & Passkeys

WebAuthn dan passkeys untuk Java engineers: relying party model, registration ceremony, assertion ceremony, RP ID, origin, challenge, credential storage, attestation, user verification, Spring Security passkeys, Yubico java-webauthn-server, testing, recovery, dan failure modes.

Risk-Based Authentication

Risk-based authentication untuk Java engineers: risk signal, device fingerprinting yang defensible, velocity, impossible travel, risk score, adaptive challenge, privacy boundary, data model, Spring/Jakarta implementation, observability, testing, dan failure modes.

Authentication for Microservices

Authentication untuk microservices Java: edge authentication, service identity, token relay, token exchange, audience boundary, mTLS, gateway pattern, BFF, asynchronous propagation, Spring Security Resource Server, JAX-RS filters, observability, testing, dan failure modes.

Authentication in Event-Driven Systems

Authentication di event-driven systems Java: Kafka producer/consumer identity, broker authentication, event identity propagation, CloudEvents metadata, outbox, audit actor, token anti-pattern, replay defense, Spring Kafka integration, dan failure modes.

Multi-Tenant Authentication

11 min

Multi-tenant authentication untuk Java systems: tenant resolution, issuer/realm strategy, tenant-aware login, token validation, session binding, Spring Security AuthenticationManagerResolver, Keycloak realm/organization trade-off, data isolation, observability, dan failure modes.

Authentication Observability

Authentication observability untuk Java systems: audit event, security event, structured logging, metrics, tracing, detection signals, correlation, privacy boundary, Spring Security event publisher, Jakarta filter instrumentation, SIEM-ready schema, dan incident evidence.

Authentication Testing Strategy

6 min

Authentication testing strategy untuk Java systems: unit test, integration test, contract test, browser/security regression, Spring Security Test, Jakarta/JAX-RS filter test, token golden vectors, OAuth/OIDC callback tests, race condition, abuse scenarios, dan CI gates.

Authentication Performance Engineering

Performance engineering untuk Java authentication systems: latency budget, capacity model, password hash cost, token validation, introspection, session store, Redis, JWKS cache, rate limiter, thread pool, backpressure, SLO, benchmark, load testing, dan failure mode produksi.

Authentication Operational Runbook

7 min

Operational runbook untuk Java authentication systems: incident classification, key compromise, token leak, session purge, refresh-token reuse, password hash breach, API key leak, IdP outage, account takeover campaign, tenant confusion, evidence handling, containment, recovery, and post-incident hardening.

Production Reference Implementation

Production reference implementation untuk Java authentication system: bounded context, database schema, Redis/session/token store, Spring Security filter chains, password login use case, JWT/resource server validation, API key, HMAC signing, audit outbox, observability, testing, deployment, and migration-ready architecture.

Authentication Architecture Review