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Varnish Cache vs Dragonfly(2026)

Varnish Cache is better for teams that need extremely high throughput http caching. Dragonfly is the stronger choice if dramatically faster than redis. Varnish Cache is open-source (from $0) and Dragonfly is open-source (from $0).

Full feature breakdown, pricing details, and pros & cons below.

By Bikram Nath

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Varnish Cache logo

Varnish Cache

open-source

Varnish Cache is a high-performance HTTP accelerator used by the world's busiest websites. It caches HTTP responses in memory, offloading backends and serving millions of requests per second.

Starting at $0

Visit Varnish Cache
Dragonfly logo

Dragonfly

open-source

Dragonfly is a modern in-memory data store fully compatible with Redis and Memcached APIs, but up to 25x faster and more memory-efficient thanks to its multi-threaded, shared-nothing architecture.

Starting at $0

Visit Dragonfly

How Do Varnish Cache and Dragonfly Compare on Features?

FeatureVarnish CacheDragonfly
Pricing modelopen-sourceopen-source
Starting price$0$0
HTTP/HTTPS reverse proxy✓—
VCL configuration language✓—
Edge Side Includes (ESI)✓—
Health checks✓—
Grace mode✓—
Hit-for-pass✓—
Varnish Enterprise✓—
Redis API compatible—✓
Multi-threaded—✓
Up to 25x faster than Redis—✓
Lower memory usage—✓
Snapshots + replication—✓
Managed cloud—✓
Lua scripting—✓

Varnish Cache Pros and Cons vs Dragonfly

V

Varnish Cache

+Extremely high throughput HTTP caching
+Flexible VCL
+Battle-tested at internet scale
+Free open source
−Not a general key-value store
−VCL learning curve
−Memory-only (no persistence)
−Setup complexity
D

Dragonfly

+Dramatically faster than Redis
+Drop-in Redis replacement
+Less memory usage
+Open source
−Newer, less battle-tested
−Smaller community
−Some Redis features still in progress

Should You Use Varnish Cache or Dragonfly?

For most teams, Varnish Cache is the better default: it offers extremely high throughput http caching and is open-source (from $0). Choose Dragonfly instead if dramatically faster than redis matters more than not a general key-value store. There is no universal winner — the right pick depends on your budget, team size, and whether you value extremely high throughput http caching or dramatically faster than redis more.

Choose Varnish Cache if…

  • •Extremely high throughput HTTP caching
  • •Flexible VCL
  • •Battle-tested at internet scale

Choose Dragonfly if…

  • •Dramatically faster than Redis
  • •Drop-in Redis replacement
  • •Less memory usage

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