Scalability - Charlie

Charlie is built for enterprise-scale operations, leveraging Shopify and Cloudflare infrastructure for reliability and performance.

Infrastructure

Charlie operates on Cloudflare Workers—the same infrastructure backbone that Shopify relies on.

This represents a shared dependency rather than an additive risk factor.

Charlie’s routing logic is written in Rust and compiled to WebAssembly, executing in under 1ms with zero impact on checkout speed.

During peak traffic events:

Charlie adds no additional scaling complexity. If Shopify can handle your traffic, so can Charlie.

Charlie becomes unavailable (no sync in progress)

Checkout continues normally. Routing functions execute within Shopify using cached metafield data.

Charlie becomes unavailable during sync

The bulk operation pauses and resumes upon recovery. Checkout remains unaffected.

Cloudflare experiences an outage

Shopify will likely face similar issues given the shared infrastructure dependency.

Scenario	Impact
Charlie dashboard down	Checkout unaffected, routing continues
Charlie sync paused	Checkout unaffected, resumes on recovery
Full Cloudflare outage	Shopify likely affected too

Routing functions execute within Shopify, independently of Charlie’s availability. Your checkout is never dependent on Charlie being online.