Two-way sync
Changes in MongoDB or Postgres Heroku instantly reflect in both systems. No stale data, no manual imports.
Keep MongoDB and Postgres Heroku in sync without custom scripts. Cut weeks of integration work, eliminate silent data drift, and give your team a single, reliable source of truth.
Two databases that must agree is one of the oldest problems in engineering: different engines for different workloads, separate services with overlapping reference data, a migration in flight, or regional instances that share a subset of records. Hand-rolled replication across systems means change capture, conflict handling, and type mapping, all built and maintained by your team.
Stacksync syncs tables or collections between MongoDB and Postgres Heroku continuously and bi-directionally, translating types between the two engines and resolving conflicts by rules you configure. Rows written on either side appear on the other within seconds.
Services that own separate databases stay consistent on the records they share, without a custom replication layer.
Mirror selected tables to another region or environment continuously, filtered to just the rows that should travel.
Keep the same dataset live in both MongoDB and Postgres Heroku, so each workload runs on the engine that suits it.
Representative objects on each side — any object or custom field can map to any target. Schemas are auto-detected; types are converted between the two systems.
| MongoDB objects | Postgres Heroku objects | |
|---|---|---|
| GridFS files Chunked file storage whose metadata can be referenced by synced documents. | Follower Databases Heroku-managed read replicas usable as low-impact sync sources. | |
| Databases Logical groupings of collections that scope a sync connection. | Tables Standard Postgres tables; the primary two-way sync target for app data. | |
| Collections The table-like sync unit; each collection maps to a table or object in the paired system. | Views Read-side projections exposed to outbound syncs. | |
| Documents BSON records created, updated, and deleted during syncs, keyed by _id. | Materialized Views Precomputed result sets synced outward on refresh. | |
| Embedded documents and arrays Nested structures that syncs flatten or map to related records in relational targets. | Schemas Namespaces that scope which tables a sync reads and writes. | |
| Indexes Keep lookups by sync key fast on large collections. | Primary and Unique Keys Match keys for idempotent upserts from connected systems. |
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every MongoDB–Postgres Heroku connection.
Changes in MongoDB or Postgres Heroku instantly reflect in both systems. No stale data, no manual imports.
Trigger automated workflows whenever MongoDB or Postgres Heroku data changes, update records, fire webhooks, or kick off sequences without brittle API scripts.
Handle millions of events per minute without losing a single MongoDB or Postgres Heroku record.
Track your MongoDB ⇄ Postgres Heroku sync health, view errors, and replay failed events in one click.
Transform legacy EDI complexity into simple database interactions between MongoDB and Postgres Heroku.
Configure and sync within minutes, no code. Whether you sync 50k or 100M+ records, Stacksync handles the queues, infra, and plumbing. Integrations are non-invasive and need zero setup on your systems.
Authenticate MongoDB and Postgres Heroku with each platform's native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.
Pick the MongoDB and Postgres Heroku objects to sync — Stacksync auto-detects both schemas, including custom fields where the platform exposes them. Sync to existing tables, or let Stacksync create new ones with ideal data types.
Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.
Yes. Stacksync provides a managed, real-time two-way integration between MongoDB and Postgres Heroku: authenticate both systems, choose the objects to sync (such as MongoDB's GridFS files and Databases), map fields visually, and changes propagate both ways in milliseconds — no code required.
Stacksync pricing is usage-based and starts at $1,000/month, including the managed MongoDB and Postgres Heroku connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom MongoDB–Postgres Heroku integration in-house.
Yes — Stacksync ships production-grade connectors for both MongoDB and Postgres Heroku. The connectors handle authentication, schema detection, rate limits, and retries; you configure the sync, and Stacksync operates it.
Change detection on MongoDB: MongoDB oplog and change streams (requires the database to run as a replica set — even single-node); Stacksync leverages these built-in tools to track changes in real time. On Postgres Heroku: Trigger-based capture or polling in most configurations; log-based logical replication availability depends on plan and Heroku's managed server settings. Each detected change propagates to the other side in milliseconds, with field-level conflict resolution and an inspectable event log.
On the MongoDB side: Documents, Embedded documents and arrays, Indexes, Views, plus custom fields where MongoDB exposes them. On the Postgres Heroku side: JSONB Columns, Sequences, Follower Databases, Tables. Stacksync auto-detects both schemas and converts types between the two systems.
Yes. Each object mapping can be bidirectional or restricted to a single direction (both systems accept writes). Read-only mirrors, one-way pushes, and full two-way sync can be mixed in the same integration.
As a data company, we understand the importance of keeping your data secure. Stacksync is built with security best practices to keep your data safe at every layer, and is DPF-certified for US, EU, UK and CH data transfers.
Let your users access Stacksync from your centralized user management systems. Works with Okta, Azure, Google SSO and more.
Immediately get alerted about record syncing issues over email, Slack, PagerDuty and WhatsApp. Resolve issues from a centralized dashboard with retry and revert options.
Securely connects to your systems with:
Every pair below is a real-time, two-way sync. Search all 386 integrations available for MongoDB and Postgres Heroku.