Overview
Edge Config is a small, globally replicated key-value store on Vercel designed for data that is read on almost every request and written rarely: feature flags, A/B test buckets, redirects, IP blocklists. Reads typically finish in about a millisecond from any region because the data is pushed to Vercel's compute locations. In July 2026 Vercel renamed it Global Config, shipped @vercel/global-config as a drop-in SDK and raised store size to 1 MB on every plan; existing EDGE_CONFIG projects keep working. Write limits (about 100 per hour on paid plans) make it unsuitable for anything transactional.
Strengths & trade-offs
Strengths
- +Around 1 ms reads from every Vercel region
- +No connection setup; reads are served from Vercel's compute locations
- +Integrates with Vercel's flags SDK and third-party flag providers
- +Simple JSON values managed via dashboard, API or CLI
Trade-offs
- −Tiny stores (1 MB) and strict write limits
- −Eventually consistent propagation after writes
- −Only usable from Vercel deployments in practice
- −Rename to Global Config means two SDK names in the wild
Great for
- +Feature flags and A/B experiment assignments
- +Redirect and rewrite tables
- +IP and bot blocklists
- +Maintenance-mode and kill switches
Think twice for
- −User data or frequently written values
- −Anything above 1 MB
- −Workloads outside Vercel
Capabilities
Native or official first-party support · 2 of 25 tracked
Scale & consistency
- Comfortable data size
- Small · ≤ 100 GB
- Horizontal scaling
- Native
- Multi-region
- Read replicas
- Transactions
- None
- Consistency
- Eventual
- Schema
- Schemaless
- Architecture
- Distributed, Serverless
- Query languages
- Edge Config SDK
Each store holds up to 1 MB, replicated to all Vercel regions for local reads.
Deployment
available on · Vercel
Ecosystem
Alternatives to Vercel Edge Config
Globally cached, eventually consistent key-value store for read-heavy data at Cloudflare's edge.
vercel-edge-config vs cloudflare-workers-kv →The key-value store built into HashiCorp Consul for service config, locks and discovery.
vercel-edge-config vs hashicorp-consul-kv →Serverless, per-request-priced Redis with an HTTP API built for edge and serverless functions.
vercel-edge-config vs upstash →Key-value store built into the Deno runtime; its hosted backend ends with Deno Deploy in 2027.
vercel-edge-config vs deno-kv →Embedded, transactional key-value and JSON document engine in a single C file, with Jx9 scripting.
vercel-edge-config vs unqlite →Embedded BSON document database for Rust with a MongoDB-like API and optional wire-protocol server.
vercel-edge-config vs polodb →Vercel Edge Config FAQ
What is Vercel Edge Config?
Vercel Edge Config is a key-value database by Vercel, first released in 2022. Edge Config is a small, globally replicated key-value store on Vercel designed for data that is read on almost every request and written rarely: feature flags, A/B test buckets, redirects, IP blocklists. Reads typically finish in about a millisecond from any region because the data is pushed to Vercel's compute locations. In July 2026 Vercel renamed it Global Config, shipped @vercel/global-config as a drop-in SDK and raised store size to 1 MB on every plan; existing EDGE_CONFIG projects keep working. Write limits (about 100 per hour on paid plans) make it unsuitable for anything transactional.
Is Vercel Edge Config open source?
No. Vercel Edge Config is proprietary, closed-source software.
Does Vercel Edge Config support ACID transactions?
No. Vercel Edge Config does not provide ACID transactions; its consistency model is eventual.
Does Vercel Edge Config scale horizontally?
Vercel Edge Config scales horizontally out of the box, with built-in sharding or partitioning. It is comfortable at small scale (≤ 100 GB). It supports cross-region read replicas.
How can I run Vercel Edge Config?
You can use the vendor's managed cloud, run it serverless and run it at the edge. Managed offerings include Global Config (Edge Config). It is available on Vercel.
What is Vercel Edge Config best for?
Vercel Edge Config is a strong fit for feature flags and A/B experiment assignments; redirect and rewrite tables; and IP and bot blocklists. Think twice for user data or frequently written values.
What are the best alternatives to Vercel Edge Config?
Common alternatives to Vercel Edge Config include Cloudflare Workers KV, Consul KV, Upstash, Deno KV and UnQLite. The right choice depends on your workload, scale and hosting; WhichDB's smart match ranks them against your requirements.
How popular is Vercel Edge Config?
Vercel Edge Config ranks #274 of 844 databases on the WhichDB Score (12.0/100), and #36 among key-value databases. The score combines public adoption signals such as package downloads, GitHub activity, job posts and developer discussion.