Backend

Tactical DDD for enterprise onboarding

Bulletproof shared-schema isolation

Use repositories, AsyncLocalStorage, global query filters, and database safeguards to make tenant isolation the default in shared-schema SaaS.

Jul 3, 202618 min read

Tactical DDD for enterprise onboarding

Resilience with events, sagas, and outbox

Use domain events, process managers, compensating actions, and the transactional outbox to make enterprise onboarding resilient at scale.

Jul 2, 202618 min read

Build your own webhook transport

How to build a webhook registry and delivery system on Postgres using outbox rows, delivery attempts, signatures, retries, and inbound inbox rows.

Jun 28, 202616 min read

Tactical DDD for enterprise onboarding

Immutability in aggregates and value objects

Design tenant configuration as an aggregate, enforce enterprise invariants in memory, and use truly immutable value objects for residency policy and quota limits.

Jun 25, 202618 min read

Durable Work in Postgres

Build a small durable workflow engine in Postgres

How to extend a Postgres durable queue into a simple durable workflow engine with workflow definitions, step scheduling, timers, signals, and versioning.

Jun 11, 202618 min read

Durable Work in Postgres

Performance and scaling

Claim-path tuning, indexes, and an interactive performance tuner for Postgres claim loops.

Jun 4, 202615 min read

Durable Work in Postgres

Schema and operations

Full Postgres schema, inbox SQL, observability, testing, and schema evolution for order:9182.

May 28, 202620 min read

Durable Work in Postgres

Cross-service handoffs

Transactional outbox, transport choices, webhooks, contracts, and when brokers fit. Work that leaves your database commit.

May 22, 202612 min read

Durable Work in Postgres

Production controls

Lease renewal, fencing, graceful drain, and housekeeping for Postgres-backed durable work after order:9182 ships.

May 8, 202618 min read

Durable Work in Postgres

Partitioning at scale

Consistent hash, heartbeats, rebalance windows, and multi-worker simulation with ring ownership.

May 1, 202620 min read

Durable Work in Postgres

Many workers

Multi-worker contention, delivery guarantees, and per-key ordering before consistent hash.

Apr 24, 202615 min read

Durable Work in Postgres

Crash recovery

Leases, lease cleanup, at-least-once delivery, and handler idempotency for Postgres inbox workers.

Apr 18, 202612 min read

Durable Work in Postgres

The claim loop

Minimal Postgres claim loop: enqueue, SKIP LOCKED claim, complete, and handler retry with an interactive simulation.

Apr 11, 202615 min read