# Prevent application and network instability by serving stale content

- **期号**: SRE Weekly Issue #223（2020-06-14）
- **作者**: Patrick HamannFull disclosure: Fastly is my employer.
- **链接**: https://www.fastly.com/blog/prevent-application-network-instability-serve-stale-content

## 简介

I’ve used this technique in the past with a single-page app and a highly-cacheable API, to ensure stability even when the backend goes down.

## 正文

# [CMCDv2: Leveling Up Your Video Streaming Telemetry](https://www.fastly.com/blog/cmcdv2-leveling-up-your-video-streaming-telemetry)

Elevate your video streaming telemetry with CMCDv2. Discover how Request, Response, and Event modes offer deeper, full-stack insights into viewer performance.

![](https://www.fastly.com/cimages/ocb1q9kflo7k/4DKDWu69625hGU7UPAmhZc/f31b5b277b8f74b389a8ce150acb64bf/Observabilityscreen_reusable.png?auto=avif&crop=2:1,smart&width=750)

## Staying Secure

### All blog posts

- [CMCDv2: Leveling Up Your Video Streaming Telemetry](https://www.fastly.com/blog/cmcdv2-leveling-up-your-video-streaming-telemetry)Elevate your video streaming telemetry with CMCDv2. Discover how Request, Response, and Event modes offer deeper, full-stack insights into viewer performance. ![](//www.fastly.com/cimages/ocb1q9kflo7k/4DKDWu69625hGU7UPAmhZc/f31b5b277b8f74b389a8ce150acb64bf/Observabilityscreen_reusable.png?auto=avif&crop=2:1,smart&width=640)
- [Accelerate Migrations: Introducing Direct Fetch for Fastly Object Storage](https://www.fastly.com/blog/accelerate-migrations-introducing-direct-fetch-fastly-object-storage)Accelerate your data migrations with Fastly's new Direct Fetch API for Object Storage. Transfer from S3-compatible sources directly, bypassing client limits. ![](//www.fastly.com/cimages/ocb1q9kflo7k/6LROhyS9Ioc3E1D8oLwSJA/5b25f2531748331fa2f74c9341a93a37/Platform_2000x1000_Blog_Storage.png?auto=avif&crop=2:1,smart&width=640)
- [CVE-2026-82329: JFrog Artifactory Authentication Bypass Exploitation Activity](https://www.fastly.com/blog/cve-2026-82329-jfrog-artifactory-authentication-bypass-exploitation-activity)Attacks targeting JFrog Artifactory (CVE-2026-82329) exploded in 72 hours. Fastly threat intelligence breaks down the mass scanning surge—and how our virtual patch protects you today. ![](//www.fastly.com/cimages/ocb1q9kflo7k/7i4ylLif1YUIldA2w9keiu/869c11a625083d08081cb1edd09fefdf/blog_New_API_and_ATO_protection.png?auto=avif&crop=2:1,smart&width=640)
- [Building Fastly Log Analytics Tools: An Open-Source Approach to Deeper Insights](https://www.fastly.com/blog/building-fastly-log-analytics-tools-open-source-approach-deeper-insights)Gain deeper insights with Fastly Log Analytics. Build an open-source, self-hosted dashboard to own your data, reduce vendor costs, and troubleshoot instantly. ![An illustration of a browser window with a large magnifying glass over the left portion of the screen](//www.fastly.com/cimages/ocb1q9kflo7k/79ZUhB8RYUPlTz7nC4jsks/4d72683f088a9299092eccfde6680228/Deploy_2000x1000_Blog_live-streaming.png?auto=avif&crop=2:1,smart&width=640)
- [Building for the Model Hardware Standard](https://www.fastly.com/blog/building-for-the-model-hardware-standard)Anthropic’s Model Hardware Standard (MHS) lets AI agents operate physical equipment. Here’s how we’re prototyping secure edge MCP support for it. ![Fastly's resilient architecture helps prevent outages and mitigate severity](//www.fastly.com/cimages/ocb1q9kflo7k/59sDhgXkcUEYZgYUkUimlm/5022abf7f5fc66dc3d3d9d94eb38fc8c/preventing_outages.jpg?auto=avif&crop=2:1,smart&width=640)
- [Preserving Analytics Attribution During Bot Challenges: A Fastly VCL & NGWAF Deep Dive](https://www.fastly.com/blog/preserving-analytics-attribution-bot-challenges-fastly-vcl-ngwaf-deep-dive)Learn how to preserve Google Analytics attribution during bot challenges. Discover how to use Fastly's NGWAF and VCL to maintain data accuracy while securing your site. ![](//www.fastly.com/cimages/ocb1q9kflo7k/55FAEK1bvLaA3LfA6DIVFE/5ee0cd9b1bc269e17b845377055962e8/Deploy_2000x1000_Blog_kv-store.png?auto=avif&crop=2:1,smart&width=640)
- [Instantly AI-Agent-Ready with WebMCP on Demand](https://www.fastly.com/blog/instantly-ai-agent-ready-webmcp-on-demand)Ensure your website is AI-agent-ready with WebMCP on Demand. See how Fastly uses edge computing to intelligently annotate web forms for reliable agent interaction. ![](//www.fastly.com/cimages/ocb1q9kflo7k/3N8OtkoHLuA8TuVnKCrQrE/00a22e3de140b2a8c76de284c369d97b/1000x500_MCP_Server_1373.svg)
- [Why SaaS and PaaS Infrastructure Leaders Are Facing 22% More Unwanted Bots](https://www.fastly.com/blog/saas-and-paas-infrastructure-leaders-are-facing-more-unwanted-bots)Bot traffic is hammering SaaS & PaaS platforms. Watch Fastly’s on-demand webcast to learn how to adaptively mitigate bot risks, protect your origin, and maintain platform uptime. ![](//www.fastly.com/cimages/ocb1q9kflo7k/6tjLRITG5UkC1NeRadrMBR/526be163b5d1fc35f98c9c0ef1b07adf/Deploy_2000x1000_Blog_bot-management.png?auto=avif&crop=2:1,smart&width=640)
- [Inside Fastly’s 2026 Internship Program: Projects, Impact & Culture](https://www.fastly.com/blog/inside-fastlys-2026-internship-program-projects-impact-and-culture)Go behind the scenes of Fastly’s 2026 Internship Program. See how our intern cohort tackled real-world engineering projects and made a lasting impact. ![](//www.fastly.com/cimages/ocb1q9kflo7k/6wIDGA86nhZpAMBgW0wipv/163da390e075e0a8d38309033187414f/Handshake_crossfunction_collaboration_reusable.png?auto=avif&crop=2:1,smart&width=640)
- [Level Up Your Security with Fastly API Enforcement](https://www.fastly.com/blog/level-up-security-fastly-api-enforcement)Take control of your API landscape with Fastly API Security. Discover, monitor, and enforce schema compliance at the edge to stop threats and secure your apps. ![](//www.fastly.com/cimages/ocb1q9kflo7k/3pKVL7LcZGNOLawO5WITv5/ad748bf484df0e41e41c2fe03a56b841/Secure_2000x1000_Blog_API_Enforcement.png?auto=avif&crop=2:1,smart&width=640)
- [MCP at the Edge: What Changes When MCP Runs Securely in Every POP](https://www.fastly.com/blog/mcp-at-the-edge)Stop wasting 500ms per AI tool call. See how Fastly Compute scales stateless MCP servers worldwide for instant, secure, sub-millisecond agent execution. ![](//www.fastly.com/cimages/ocb1q9kflo7k/60M0wGLqysqVMiogo7oLhF/51033a268e15f385a54a45f9dd961c8c/Deploy_2000x1000_Blog_edge-compute.png?auto=avif&crop=2:1,smart&width=640)
- [The Invisible Stadium](https://www.fastly.com/blog/the-invisible-stadium)See how AI, edge routing, and expert teams manage massive traffic spikes during the World Cup, ensuring a seamless, high-performance viewing experience.
- [Terraform Your Fastly Config in a few Commands](https://www.fastly.com/blog/terraform-your-fastly-config-in-a-few-commands)Import your complete Fastly setup into Terraform in minutes. No rewrites, no downtime, just your existing infrastructure, now as code. ![CODE - Fastly](//www.fastly.com/cimages/ocb1q9kflo7k/6TnCNyEBEORFkA5B3la79e/cff7233af623f552fa0048a23f53eda7/codesplitting-blog-logo-lg.png?auto=avif&crop=2:1,smart&width=640)
- [Online Sports’ Shadow Audience](https://www.fastly.com/blog/online-sports-shadow-audience)Piracy, bots, and AI-driven attacks shadowed the 2026 World Cup. Here's what the traffic data reveals — and what it means for infrastructure. ![An illustration of a browser window with a large magnifying glass over the left portion of the screen](//www.fastly.com/cimages/ocb1q9kflo7k/79ZUhB8RYUPlTz7nC4jsks/4d72683f088a9299092eccfde6680228/Deploy_2000x1000_Blog_live-streaming.png?auto=avif&crop=2:1,smart&width=640)
- [Beyond the Bot Block: How Fastly and Experian Are Turning AI Agent Traffic into Revenue](https://www.fastly.com/blog/beyond-bot-block-fastly-experian-turning-ai-agent-traffic-into-revenue)Discover how Fastly and Experian Agent Trust enable secure agentic commerce. Learn how to verify, authorize, and monetize AI agent traffic at the edge. ![](//www.fastly.com/cimages/ocb1q9kflo7k/6wIDGA86nhZpAMBgW0wipv/163da390e075e0a8d38309033187414f/Handshake_crossfunction_collaboration_reusable.png?auto=avif&crop=2:1,smart&width=640)
- [AI Content Provenance is Gaining Momentum: Get C2PA Support Now with Image Optimizer](https://www.fastly.com/blog/ai-content-provenance-c2pa-support-with-image-optimizer)Ensure compliance with new AI transparency laws. Fastly Image Optimizer now supports C2PA, preserving critical provenance metadata through your delivery pipeline.
- [What is CVE-2026-66066? Protecting Your Rails App from Active Storage RCE](https://www.fastly.com/blog/what-is-cve-2026-66066-protecting-rails-app-active-storage-rce)Learn about CVE-2026-66066: An arbitrary file read vulnerability in Rails Active Storage. Understand the risks and protect your environment with our virtual patch.
- [What Modern Fintechs Actually Need from Their Security Stack](https://www.fastly.com/blog/what-modern-fintechs-actually-need-from-their-security-stack)Ditch fragmented tools and manual tuning. See how high-performing fintechs use edge security to protect payments, APIs, and user trust.
- [Teaching Coding Agents to Check Their VCL with Fastly Fiddle](https://www.fastly.com/blog/teaching-coding-agents-to-check-their-vcl-with-fastly-fiddle)Learn how to use Fastly Fiddle to test and verify VCL on real infrastructure. This sandbox tool helps both developers and coding agents debug edge configurations.
- [Automated Payments at the Edge with x402 and Fastly Compute](https://www.fastly.com/blog/automated-payments-at-the-edge-with-x402-and-fastly-compute)Protect APIs and agentic traffic at the edge. Explore a practical guide to enforcing x402 HTTP payment challenges using Fastly Compute and testnet stablecoins.