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

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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.

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Performance

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

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Peak traffic handling

During peak traffic events:
  • Checkout functions scale automatically through Shopify
  • Application infrastructure scales automatically through Cloudflare
  • Rate limiting protects Shopify APIs from overload
Charlie adds no additional scaling complexity. If Shopify can handle your traffic, so can Charlie.

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Availability scenarios

Checkout continues normally. Routing functions execute within Shopify using cached metafield data.
The bulk operation pauses and resumes upon recovery. Checkout remains unaffected.
Shopify will likely face similar issues given the shared infrastructure dependency.

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Service continuity

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

Integration

How Charlie integrates with Shopify

Security

Data governance and security controls
Last modified on April 23, 2026