Optimi Guides

Technical guides for a faster, safer, more visible web

Practical, provider-neutral explanations of edge performance, web security, and technical search visibility for decision-makers and delivery teams.

The guide library

Practical guides for the three edge pillars

Use the library to understand a problem, align technical and non-technical stakeholders, and plan a safe next step.

Performance

Deliver faster, more resilient experiences

Multi-CDN Explained

Learn when a Multi-CDN architecture is justified, how to steer traffic safely, and how to test failover without creating cache or security gaps.

CDN Caching Explained

Learn how CDN caching works, which assets and responses are safe to cache, how cache keys and purges work, and how to avoid serving private data publicly.

Cache-Control Guide

A practical Cache-Control guide with safe patterns for static assets, HTML, APIs, private data, shared CDNs, revalidation, and stale responses.

RUM vs Synthetic Monitoring

RUM and synthetic monitoring answer different performance questions. Learn when to use each, how to combine them, and how to turn signals into action.

Web Performance Budgets

A practical method for setting, enforcing, and reviewing web performance budgets across page weight, Core Web Vitals, third parties, and delivery paths.

CDN Cache Misses

Learn how to distinguish a real cache miss from a bypass or revalidation, find the root cause, and improve CDN cache efficiency without caching private data.

Core Web Vitals Guide

Understand LCP, INP, and CLS, their current good thresholds, how to measure them in field and lab data, and which fixes to apply first.

Cache Purging Without Downtime

Learn how to invalidate CDN content safely with scoped purges, versioned assets, stale serving, verification, and rollback procedures.

Static vs Dynamic Content

Learn what to cache at the edge, how to handle dynamic and personalized content, and how to verify cache correctness without leaking data.

Speed Up a Slow Website

A practical 2026 checklist for diagnosing and speeding up a slow website, from TTFB and Core Web Vitals to images, JavaScript, caching, and CDN delivery.

DNS Performance Guide

Understand DNS lookup latency, recursive caching, authoritative DNS, Anycast, TTLs, DNSSEC, measurement, migration, and rollback for faster websites.

CDN Migration Guide

A step-by-step CDN migration plan covering configuration parity, DNS, TLS, cache behaviour, observability, staged cutover, and rollback.

Peak Traffic Readiness

A practical peak-traffic readiness checklist covering capacity, caching, security, load testing, observability, and incident response.

Ecommerce Image Optimization

A practical ecommerce image optimization guide covering AVIF, WebP, responsive sizing, LCP, layout stability, CDN delivery, and verification.

Cloudflare and Fastly CDN Configuration

A provider-neutral CDN configuration checklist covering origins, TLS, cache rules, cache keys, purges, observability, testing, and rollback.

Reduce TTFB

Learn what TTFB measures, how to isolate DNS, network, CDN, application, and database delays, and which changes reliably reduce server response time.

Website Resilience

Assess whether multi-CDN reduces delivery risk. Design tested failover, consistent edge policy, and recovery objectives.

Kubernetes SRE SLOs

A practical Kubernetes SRE guide to service level objectives, error budgets, latency indicators, alerting, and release decisions for production platforms.

Kubernetes Observability

Build Kubernetes observability that connects cluster health, application requests, traces, logs, and edge delivery signals to faster incident diagnosis.

Kubernetes Autoscaling

Configure Kubernetes autoscaling with HPA, KEDA, resource requests, queue signals, rollout safeguards, and latency-aware validation for reliable scaling.

Kubernetes Capacity Planning

Plan Kubernetes capacity with demand forecasts, resource headroom, startup time, dependency limits, load testing, and regional delivery measurements.

Kubernetes Multi-Region Edge

Design Kubernetes multi-region and edge architecture with data consistency, traffic steering, health checks, failover tests, and end-to-end latency measurement.

Modern Twelve-Factor Apps

Apply the Twelve-Factor App methodology to modern services with practical guidance for configuration, processes, observability, Kubernetes, latency, and resilient delivery.

Stateless Services on Kubernetes

Design stateless Kubernetes services that survive rescheduling, scale without losing work, control dependency pressure, and preserve low-latency delivery paths.

Cloud-Native Config and Secrets

Manage cloud-native configuration and secrets with typed contracts, least privilege, rotation, Kubernetes safeguards, and operational visibility without leaking credentials.

Dependency Resilience

Build resilient service dependencies with deadlines, bounded retries, circuit breakers, backpressure, observability, and cloud-native scaling safeguards.

Safe Container Releases

Release containerized services safely with immutable artifacts, supply-chain controls, database compatibility, progressive delivery, Kubernetes safeguards, and observability.

Distributed Systems Latency Budgets

Learn how to set and operate latency budgets for distributed systems, from user journeys and edge caches to services, queues, databases, and origin protection.

Reliable API Design

Design reliable APIs with explicit contracts, deadlines, idempotency, safe caching, rate limits, queues, observability, and protected origins.

Queue-Based Load Leveling

Use queue-based load leveling to absorb bursts safely with durable acceptance, idempotent workers, backlog SLOs, scaling signals, and edge-to-origin protection.

Edge Compute Architecture

Design edge compute architecture for low latency and resilient delivery with safe cache keys, origin controls, state boundaries, observability, and portable patterns.

Global Edge Architecture

Plan a global edge architecture with safe DNS and traffic steering, cache and origin design, regional failure tradeoffs, observability, and provider-neutral resilience.

Cloudflare Cache Rules

Configure and validate Cloudflare Cache Rules safely, with clear cache-key, origin-header, and purge responsibilities for public web content.

Deploy Cloudflare Workers

A production deployment workflow for Cloudflare Workers, from edge-fit assessment through canary rollout, observability, and rollback.

Cloudflare Load Balancing

Configure Cloudflare pools, monitors, steering, and failover with capacity-aware testing, observability, and explicit rollback criteria.

Fastly Caching with VCL

Configure and validate Fastly caching with VCL, explicit TTLs, safe cache keys, pass behavior, shielding, staged activation, and practical rollback steps.

Fastly Compute Deployment

Deploy Fastly Compute with reproducible WebAssembly packages, explicit service configuration, secret handling, local testing, observability, staged activation, and a tested rollback path.

Fastly Origin Shielding

Configure Fastly origin shielding safely by choosing a shield near each origin, assigning it per backend, verifying cache-miss behavior, monitoring logs and headers, and retaining a rollback path.

Security

Reduce attack surface without blocking customers

WAF Configuration Guide

A practical WAF configuration guide covering managed rules, safe rollout, exceptions, false-positive analysis, testing, and continuous tuning.

Security Headers Checklist

Use this practical security headers checklist to configure CSP, HSTS, frame protection, MIME protection, referrer controls, CORS, cookies, and reporting safely.

API Protection at the Edge

Configure provider-neutral API protection at the edge with an inventory, strong authentication, schema validation, quotas, logging, and safe rollout.

Zero Trust Web Apps

Learn how to apply zero trust to web applications with a practical sequence for identity, resource policy, APIs, service-to-service access, and validation.

Agent Spoofing

Learn how to verify AI agents and crawlers with layered controls, signed requests, IP validation, and route-specific bot policies.

TLS and HTTPS

A practical guide to TLS, HTTPS, certificates, HSTS, secure headers, edge termination, and the validation steps that keep modern web traffic protected.

Protect Your Origin Server

Learn how to reduce origin exposure with DNS hygiene, gateway-only access, firewall controls, authenticated edge connections, monitoring, and safe testing.

DDoS Protection Guide

Understand DDoS protection layers, origin security, traffic controls, observability, and the response preparation required before an attack.

Bot vs Human Traffic

Learn how to distinguish legitimate people, trusted crawlers, and abusive automation using layered signals, careful response rules, and safe monitoring.

Rate Limiting Guide

A practical, provider-neutral guide to rate limiting APIs and web flows by identity, route, and risk without punishing legitimate customers.

Secure Webhooks

Build resilient webhook receivers with signature verification, replay protection, idempotency, schemas, rate limits, and safe incident handling.

Security Incident Response

Create a tested website incident plan covering roles, evidence, edge-provider escalation, customer communication, recovery, and lessons learned.

AI Harness Engineering

A practical guide to designing coding-agent delivery harnesses with repository context, deterministic feedback, least privilege, budgets, and reviewable outcomes.

Agent-Navigable Repositories

Make repositories easier for coding agents and senior reviewers to navigate with layered instructions, runnable checks, durable handoffs, and context budgets.

Secure Agent Sandboxes

Secure coding-agent execution with isolated workspaces, least-privilege tools, short-lived credentials, controlled egress, audit evidence, and safe failure handling.

Scaling Agent-First Delivery

Scale coding-agent delivery through task decomposition, isolated CI capacity, deterministic gates, latency and cost budgets, and measured autonomy.

Agent Evaluation and Observability

Evaluate and observe coding agents with deterministic checks, task suites, trace correlation, privacy controls, budgets, and evidence for safe delivery decisions.

Cloudflare WAF Configuration

Deploy Cloudflare WAF managed and custom rules in stages, with scoped exceptions, API-safe decisions, logging practices, verification, and rollback.

Fastly Next-Gen WAF

Set up and operate Fastly Next-Gen WAF policies safely with scoped signals and exclusions, request rules, simulation, logging, staged enforcement, and rollback.

Visibility

Help search systems find and understand your site

Crawl Budget

Understand crawl budget, crawl capacity, crawl demand, robots.txt, sitemaps, redirects, duplicate URLs, and the fixes that help search engines focus on valuable pages.

Log File Analysis

Use server and edge logs to see how search crawlers really access your site, uncover wasted crawl activity, and connect SEO problems to infrastructure events.

Cache Warming Explained

Learn how cache warming reduces cold-cache latency, which URLs to warm, how to avoid stale or unsafe content, and what to measure at the edge.

Redirects, Caching, and SEO

Redirect chains, cached responses, and inconsistent canonical signals can slow users and complicate crawling. Learn how to design and measure them safely.

HTTP Status Codes and SEO

A practical guide to 2xx, 3xx, 4xx, and 5xx responses: how status codes affect crawling, indexing, redirects, caching, and web performance.

Technical SEO Infrastructure

A technical SEO checklist for edge infrastructure: DNS, HTTPS, redirects, caching, response time, Core Web Vitals, crawlability, and validation.

GEO vs SEO

GEO is not a replacement for SEO. Learn how crawlability, clear content, links, structured data, and measurement support visibility in AI search experiences.

AI Search Readiness

How AI search can change discovery. Build useful, accessible brand and product content, then measure qualified traffic and conversions.

Hreflang and CDN Routing

How to combine hreflang with predictable CDN routing so search engines discover the right locale and users receive fast, correct content.

Website Speed and Search Visibility

A practical guide to the relationship between website speed, Core Web Vitals, crawling, and search visibility without overstating what performance can do.

JavaScript Rendering and SEO

A fast browser experience is not proof that crawlers can index your content. Learn how JavaScript rendering fails and how to test the full crawl path.