Harper | Build Distributed Max-Performance Apps

Page Cache

Harper Page Cache eliminates slowdowns from cold starts, cache misses, and origin bottlenecks. By pre-rendering pages and injecting dynamic attributes like price, personalization, and availability at the last responsible moment, Harper delivers instant, always-current pages worldwide — with minimal code changes.

Loads product pages in as little as 600ms for 95% of users.

Prerender for Bots

Modern JavaScript-heavy sites often frustrate search bots, leading to missed content, wasted crawl budgets, and delayed rankings. Harper Prerender for Bots solves this by generating lightweight HTML snapshots, stored at the edge and delivered instantly to crawlers. The result: faster indexing, more pages crawled, reduced backend strain, and always-available product pages—even during origin failures.

400% increase in crawl rate and P95 latency of just 2ms.

Early Hints

Every millisecond matters when it comes to conversions, Core Web Vitals, and SEO. Harper Early Hints uses partial 103 HTTP responses to proactively load critical assets—like CSS, fonts, and hero images—before the full page is ready. This closes the gap between request and render, cutting hundreds of milliseconds off page loads. Built on Harper’s fused runtime, Early Hints operates across multiple regions to deliver extreme performance at scale, driving faster time-to-interaction and measurable growth.

350,000+ requests/minute processed with P95 latency of just 1.06 ms

Redirector

Managing redirects across large sites is complex, error-prone, and costly. Harper Redirector simplifies it with an edge-native system that resolves redirects in just 1 ms, even at massive scale. With built-in support for bulk imports, API-driven management, versioning, and multi-domain flexibility, Harper reduces engineering overhead while improving site performance and SEO.

1 ms redirect resolution, supporting 10M+ values and 1M+ requests per second.

GraphQL

Traditional GraphQL deployments struggle with cache misses, resolver latency, and backend strain. Harper fuses database, cache, and logic into one runtime at the edge, enabling whole-query caching, field-level routing, and real-time updates. The result: faster UIs, reduced costs, and fresh data without complex rewrites.

Cut origin load and latency with full and partial query caching.