Battle Plan 2018: Illuminate Blind Spots and Unknown Unknowns
December 27, 2017

Josh Gray
Cedexis

There are known knowns. These are things we know that we know. There are known unknowns. That is to say, there are things that we know we don't know. But there are also unknown unknowns. There are things we don't know we don't know.

Bonus points if you know who came up with that tongue twister. He was talking about terrorists, but we're here to discuss a different sort of war — the Battle for Bandwidth. These days, application and content delivery requires special tactics, an integrated strategy, and well-sourced intelligence. And the unknown unknowns are the true enemy because they inevitably lead to outages, slowdowns, and mutinous customers.

In early November, a major outage caused by a minor configuration error (a route leak, to be exact) at global backbone provider Level 3 created widespread connection issues on both U.S. coasts. Comcast, Verizon, Cox, and Vonage customers were particularly affected.

One small error can have mighty ripple effects, and the cause isn't always apparent to network admins and enterprise customers. The time it took to return the Down Detector maps from angry red to mellow yellow could have been shortened by looking at Real User Measurements (crowdsourced telemetry), realizing it wasn't a single site or ISP, and following a logic tree to find the culprit.

With Global Server Load Balancing, your delivery network is smart enough to see the barricade around the corner and switch routes on the fly — saving the day (and making the other guys look a bit dazed and confused).

Blind spots can be hiding more than outages. Your crack team of DevOps commandos can't run successful release missions if they can't check what's really going on in the field. You don't want them dashing around in the dark without a robust tactical plan based on all the parameters you can assess — when you turn unknown unknowns into known knowns from your various data streams, you can put them to work.

Continuous deployment isn't for the faint of heart — you better have your Kevlar and your night vision goggles. Companies like Salesforce are releasing updates dozens of times a day; but even a handful a week requires a careful strategy. You can use RUM to test an update by initially limiting roll-out to one data center. Check for 40x/50x errors. If you're seeing problems, you can check both user experience with your app (non-updated versions) in other places, and user experience at the same data center where you are testing the updated version, to deduce the source of trouble.

One of the biggest unknown unknowns in traffic management is what's going on in places you haven't served recently. If a story about Boise causes traffic to spike there, and that's not normally an audience hotspot for your service, chances are you won't have any measurements of your own to go on. Community intelligence turns these dark corners of your empire into known knowns through automated crowdsourcing of quality of experience metrics. When combined with real-time server health checks and third-party data streams, you have a powerful ability to make efficient, economical routing decisions, even for destinations you don't have any history with.

The more insight and intelligence can be used to accelerate the acquisition of known knowns, the better it is for your business and your bottom line. In the New Year, we should be less accepting of blind spots. They're expensive — they cost us time, money, and customers. Nobody has enough human problem solvers around to keep putting out fires and rigging up one-off workarounds. Our best talent should be working on the next release, the next big idea, or the next major dilemma (Net Neutrality game changers, anyone?) — not floundering around trying to guess what's holding up traffic. You can't control what you can't see, and on the hybrid IT battlefield, control keeps you on top of the hill. We're pretty sure Donald Rumsfeld would agree.

Josh Gray is Chief Architect at Cedexis
Share this

Industry News

December 06, 2022

The Cloud Native Computing Foundation® (CNCF®), which builds sustainable ecosystems for cloud native software, announced the graduation of Argo, which will join other graduated projects such as Kubernetes, Prometheus, and Envoy.

December 06, 2022

Wib announced API PenTesting-as-a-Service (PTaaS) designed to help organizations proactively cover the latest PCI-DSS 4.0 mandates for testing application security, APIs, and vulnerabilities in Business Logic.

December 05, 2022

Harness announced Harness Cluster Orchestrator to allow customers to optimize their Kubernetes cloud workload costs and realize up to 90% cloud cost savings with Amazon Elastic Compute Cloud (Amazon EC2) Spot instances from Amazon Web Services (AWS).

December 01, 2022

Salesforce introduced a new Automation Everywhere Bundle to accelerate end-to-end workflow orchestration, automate across any system, and embed data and AI-driven workflows anywhere.

December 01, 2022

Weaveworks announced that Flux, the original GitOps project, has graduated in the Cloud Native Computing Foundation (CNCF®).

December 01, 2022

Tigera announced enhancements to its cluster mesh capabilities for managing multi-cluster environments with Calico.

December 01, 2022

CloudBees achieved the Amazon Web Service (AWS) Service Ready Program for Amazon Elastic Compute Cloud (Amazon EC2) Spot Instances.

November 30, 2022

GitLab announced the limited availability of GitLab Dedicated, a new way to use GitLab - as a single-tenant software as a service (SaaS) solution.

November 30, 2022

Red Hat announced an expansion of its open solutions publicly available in AWS Marketplace.

November 30, 2022

Sisense announced the availability of the Sisense CI/CD Git integration module.

November 29, 2022

Codenotary announced TrueSBOM for Serverless, a self-updating Software Bill of Materials (SBOM) for applications running on AWS Lamda, Google Cloud Functions and Microsoft Azure Functions that is made possible by simply adding one line to the application source code.

November 29, 2022

Code Intelligence announced its open-source Command-Line Interface (CLI) tool, CI Fuzz CLI, now allows Java developers to easily incorporate fuzz testing into their existing JUnit setup in order to find functional bugs and security vulnerabilities at scale.

November 29, 2022

Parasoft announced the 2022.2 release of Parasoft C/C++test with support for MISRA C:2012 Amendment 3 and a draft version of MISRA C++ 202x.

November 28, 2022

Kasm Technologies announced the release of Kasm Workspaces v1.12, providing major enhancements to its portfolio of digital workspaces delivering Desktop as a Service (DaaS), Virtualized Desktop Infrastructure (VDI), Remote Browser Isolation (RBI), Open-Source Intelligence Collection (OSINT), Training/Sandboxes, and Containerized Application Streaming (CAS).

November 28, 2022

Cloud4C has achieved Amazon Web Services (AWS) DevOps Competency status.