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AI and Systems Architecture

Architecture is the set of decisions that become expensive to change later. In AI systems, those decisions usually sit around model access, retrieval, evaluation, data freshness, cost control, and ownership boundaries.

This hub connects AI architecture with older systems lessons: keep interfaces small, make failure modes explicit, and avoid distributing complexity before the team can operate it.

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Architecture Questions That Matter

Before adding another model, service, or queue, answer these:

  1. Where is the stable interface between product code and model behavior?
  2. How is context assembled, filtered, and refreshed?
  3. Which validation path catches bad output before users rely on it?
  4. What happens when the preferred model is slow, unavailable, expensive, or wrong?
  5. Who owns incidents caused by model, retrieval, or data drift?

Supporting Patterns

Retrieval and context:

Agents and tools:

Older systems tradeoffs:

Failure Modes

  • Letting prompts become hidden architecture.
  • Hard-coding provider behavior three layers deep.
  • Treating retrieval as a static index instead of a living data pipeline.
  • Running AI features without cost attribution, evaluation, and rollback paths.

References

89 entries tagged “AI and Systems Architecture”

    Power Belongs on the AI Roadmap · 3 min Power, not models or GPUs, is the binding constraint. Treat energy and capacity as roadmap dependencies with real lead times. ai architecture strategy Regulatory Divergence Is a Routing Problem · 4 min One global AI policy is wrong in every market. Tag requests by jurisdiction, data class, and user type, then route policy like cost and capability. governance ai privacy Reliability Is the Autonomy Ceiling · 4 min Capability earns the demo; measured reliability earns the autonomy. Budget autonomy by failure cost times failure rate. ai reliability operations Your Vendor's Balance Sheet Is Your Risk · 4 min Integrate a model vendor and you inherit their balance sheet. Subsidized pricing is a repricing waiting to become your outage—price solvency as a dependency. strategy ai cost Agent Identity Is the New Control Plane · 4 min An agent that acts needs an identity—scoped, short-lived, attributable, revocable—not a shared API key. ai reliability security Agentic Systems at Scale: The New Reliability Contract · 4 min Agentic systems need SRE-style reliability contracts with explicit blast-radius limits, fallback paths, and kill switches. ai reliability operations The AI Strategy Stack: What Boards Mistake for Moats · 4 min Most AI moat claims are distribution theater; durable moats come from routing economics, proprietary workflow data, and operational reliability. strategy ai executive The Executive Case for Local-First AI Infrastructure · 3 min Local-first AI is not ideology. It is control over placement, margin, latency, and failure modes. ai architecture cost How to Run an AI Incident Review That Changes Architecture, Not Slides · 2 min Incident reviews should produce architecture deltas and control updates, not narrative theater. reliability ai governance Build the System the Model Cannot Break · 12 min A manifesto for building AI-native organizations. Twelve tenets across strategy, architecture, economics, and people — and the only test that matters in year two. opinion ai strategy The 2026 AI Build vs. Buy Calculus (It’s Just Operational Cost) · 3 min By mid-2026, AI build vs buy has nothing to do with novelty. It is a ruthless mathematical calculation of telemetry, context freshness, and infrastructure lock-in. strategy ai architecture Why Most Enterprise AI Architecture Fails in Year One · 3 min In 2026, enterprise AI isn't failing because models are bad. It is failing because organizations are building brittle demos instead of bounded, operable systems. architecture ai reliability Sovereign Systems: Building for a World Where Data Privacy Is Non-Optional · 6 min Privacy is an architecture constraint, not a feature toggle. Building sovereignty in early avoids painful retrofits and closes enterprise deals faster. privacy security compliance AI Team Structures 2026: Central, Embedded, and Hybrid Models · 8 min A practical guide to central, embedded, and hybrid AI team structures, with roles, tradeoffs, and scaling rules. teams ai architecture AI-Native Architecture Patterns 2026: Production Guide · 7 min Production AI architecture patterns for gateways, retrieval, evaluation, fallbacks, cost control, and ownership. architecture ai engineering Scaling AI in the Enterprise Is a Management Problem · 4 min The pilots work. What fails is going from five demos to fifty production features without an operating model. That's a management problem, not an AI problem. business ai architecture Agent Orchestration: Four Patterns, Honest Tradeoffs · 5 min Multi-agent systems are distributed systems with the usual coordination headaches. The four patterns I've seen work, and when each one falls apart. agents ai architecture MCP in Practice: Building Tool Servers in Go · 7 min Model Context Protocol promises to standardize how AI talks to tools. I built an MCP server in Go to see if the promise holds up. Here's what I found. agents ai go Your AI Infrastructure Is Not Special · 4 min AI infrastructure at scale is just infrastructure. The same boring patterns -- gateways, caching, circuit breakers, budgets -- solve the same boring problems. ai infrastructure architecture Agent Patterns That Survive Production · 7 min Single-prompt agents break on real tasks. Plan-execute-replan, orchestrated specialists, structured memory, and explicit recovery are what survive -- in Go. agents ai go The Best Model Is the Smallest One That Works · 3 min Everyone reaches for GPT-4 by default. Most production tasks don't need it. Small models are faster, cheaper, and often better when the task is well-defined. llm ai performance Stop Stuffing Your Context Window · 4 min Bigger context windows aren't an excuse to stop thinking about what goes into them. Most teams are paying for irrelevant tokens and wondering why quality degrades. llm ai architecture GPT-4o Changed the Interface, Not the Hard Part · 4 min OpenAI shipped a model that sees, hears, and talks back in real time. The demos look magical. The architecture implications are where it gets interesting. llm architecture ai LLM Structured Output in Go: JSON Schema, Validation, Retries · 7 min How to get reliable JSON from LLMs in Go with schemas, validation, repair loops, and typed contracts. llm api go Why I Run Multiple Models in Production · 4 min Betting on a single model provider is like having a single database with no failover. Here is why multi-model is the only sane production strategy. ai architecture llm Architecting AI-Native Applications (Without the Delusion) · 7 min AI-native apps are fundamentally different from a model bolted onto a CRUD app. How I structure them -- with code, layers, and hard-won opinions. architecture ai engineering Your AI Infrastructure Is Not Ready for Scale. Neither Is Mine. · 4 min GPU shortage is real, rate limits are a production constraint, and your AI demo will collapse under real traffic. Annoyed thoughts on infrastructure realism. ai infrastructure architecture OpenAI DevDay Happened and I Have Opinions · 4 min OpenAI DevDay was not just a product launch. It was a platform play that changes the build-vs-buy calculus for every team shipping AI features. llm ai architecture Agent Architecture Patterns That Actually Work in Production · 6 min Most agent demos are impressive. Most agent production systems are not. Here is what separates the two. ai agents llm RAG Patterns That Actually Work in Production · 8 min RAG is the default architecture for grounding LLMs in private data. Here are the patterns that survive real traffic, with Go examples from production systems. llm ai go My First Week Building with GPT-4 · 4 min GPT-4 landed and everything changed. What I learned in the first week of building with it, and the architecture decisions that followed. ai llm architecture LLM Integration Patterns That Actually Survive Production · 6 min Practical patterns for integrating LLMs into real applications -- prompt management, structured outputs, caching, fallbacks, and tool use -- with Go examples. ai llm go Monorepo vs. Polyrepo: A Practical Decision Guide · 4 min Monorepo or polyrepo depends on coupling, team shape, and your appetite for build tooling. Here is how to decide without getting religious about it. architecture development developer-experience Go Concurrency Patterns I Use in Every Service · 7 min Worker pools, fan-out/fan-in, pipelines, and the cancellation discipline that keeps Go services predictable under load. go architecture backend When to Go Async (And When to Resist the Urge) · 5 min Async solves real problems -- bursty traffic, slow dependencies, decoupled teams -- but the complexity tax is real. Event-driven lessons from Decloud. architecture Rate Limiting: The Boring Feature That Saves You at 3 AM · 4 min Rate limiting algorithms, implementation tradeoffs, and practical lessons from building limiters for high-traffic APIs at a real-time messaging company. api backend go Distributed Systems Patterns I Keep Reaching For · 6 min The patterns that actually survive production across failure handling, consistency, messaging, coordination, and scaling. distributed-systems architecture microservices TypeScript: A Go Developer's Honest Take · 4 min TypeScript is the best thing to happen to JavaScript. That bar is lower than people think. Here's what actually matters for large codebases. engineering architecture go You Probably Don't Need a Service Mesh · 5 min Service meshes solve real problems at real scale. But most teams adopt them before the problems exist. Here's how to decide honestly. kubernetes architecture API Versioning: Pick One and Stop Overthinking It · 4 min API versioning is a maintenance commitment, not a design exercise. URL paths for public APIs, headers for internal. The real work is avoiding breaking changes. api architecture backend The AWS us-east-1 Outage Was Predictable. Your Architecture Was Not Ready. · 4 min December 7 reminded everyone that us-east-1 is a single point of failure for half the internet. Again. I am annoyed. cloud incident-management reliability Event Sourcing in Practice: What I Learned Building Financial Event Pipelines · 7 min Event sourcing is powerful but expensive to get wrong. Here's what actually works, with Go code, drawn from building event pipelines at the fintech startup. architecture go Most 'Technical Debt' Is Just Decisions You Disagree With Now · 4 min The term 'technical debt' has become meaningless. Everything inconvenient is debt. Here's what it actually is, when it matters, and why most teams handle it wrong. technical-debt leadership architecture Feature Flags at Scale: What Nobody Warns You About · 5 min Feature flags are great until you have 847 of them and nobody knows which ones are safe to remove. Practical lessons from Decloud and enterprise teams. ci-cd devops go Zero Trust Architecture: What It Actually Looks Like · 6 min Zero trust from two angles: national cyber-defense systems and a major telecom. The architecture patterns, implementation path, and what most companies get wrong. security architecture infrastructure Most Teams Should Just Use Postgres · 3 min Serverless databases are solving problems most teams don't have. Here's why Postgres with a connection pooler is still the right answer. cloud databases architecture API Gateway Patterns That Actually Work · 5 min Edge gateways, BFFs, and service mesh ingress -- what I've learned running them at Decloud and at large telecoms. api microservices architecture Data Engineering Patterns: Batch vs. CDC vs. Streaming · 6 min A comparison of data ingestion patterns from building the fintech startup's financial data pipelines, plus when each one actually makes sense. data metrics architecture Multi-Cloud Is Mostly a Marketing Strategy · 4 min Multi-cloud sounds great in vendor pitches. In practice, it doubles your operational burden for benefits most teams will never need. cloud architecture infrastructure API Gateways: Build, Buy, or Regret · 6 min I've built a custom Go gateway, run Kong in prod, evaluated Envoy, and used managed cloud gateways. What I recommend after doing each wrong at least once. api go kubernetes GraphQL Federation Is Probably Not For You · 4 min Most teams adopting GraphQL federation don't need it. When it makes sense, when REST is fine, and why conference talks are a bad basis for architecture. api architecture opinion Event-Driven Architecture: What I Got Wrong and What Survived · 10 min Lessons from building event-driven systems at the fintech startup and Decloud: what works, what silently corrupts your data, and Go patterns that hold up. architecture go distributed-systems Serverless vs Containers: Where the Math Stops Working · 5 min Serverless is great until it isn't. A comparison of serverless and containers at different traffic scales, with actual numbers on where the economics flip. cloud containers architecture Your Team Isn't Remote. It's Just on Zoom. · 3 min Most teams claiming to work remotely are just recreating the office over video calls. Async communication is the actual unlock, and almost nobody is doing it right. remote-work architecture leadership Your Video Infrastructure Isn't Ready for What's Coming · 6 min Most companies building video calling are making the same architecture mistakes. What I keep seeing, and how to fix it before your SFUs fall over. llm infrastructure architecture I Tried Every API Versioning Strategy. Here's the One I Actually Use. · 5 min After versioning messes at multiple companies, I landed on URL path versioning for anything public. The alternatives didn't survive contact with reality. api architecture Database Replication Patterns That Actually Matter · 8 min A practical breakdown of replication modes, topologies, and the tradeoffs between consistency, availability, and not losing your users' data at 3am. databases distributed-systems architecture Your Cloud Bill Is a Design Document · 6 min Cloud cost management isn't a finance problem. It's an architecture problem disguised as a spreadsheet. Treat your AWS bill as the engineering signal it is. cost cloud architecture Most Edge Computing Projects Are Premature Optimization · 3 min Edge computing is real, but most teams adopting it don't have an edge problem. They have an architecture problem they're solving with geography. infrastructure architecture distributed-systems Message Queues: The Patterns Nobody Tells You About Until 3 AM · 8 min Queues look simple on a whiteboard. Then you deploy them. The messaging patterns I've learned the hard way across three startups, with real failure stories. architecture go backend Data Mesh Is an Org Chart Fix, Not a Tech One · 3 min Most data problems are ownership problems. Data mesh gets that right. But adopting it as an architecture diagram exercise misses the point entirely. data architecture engineering Your Monolith Is Probably Fine · 5 min Most teams shouldn't be migrating to microservices. Here's how to tell if you actually should, and how to do it without wrecking your delivery for eighteen months. microservices architecture go You Probably Don't Need Multi-Region · 5 min Multi-region is a commitment most teams make too early. When it actually pays off, the patterns that work, and why data is the part that ruins your week. architecture cloud distributed-systems Design for Failure or It Will Design Your Weekend · 3 min Failure is not an edge case but the default state you hold off with good engineering. Hard-won rules for systems that bend instead of shatter. reliability architecture distributed-systems Async Job Processing: Patterns That Saved Us at a Fintech Startup · 7 min Hard-won patterns for reliable background job processing -- queues, retries, idempotency, and the failures that taught me to care about all three. backend architecture reliability What I Learned Scaling an Engineering Team · 6 min Lessons from growing an engineering org at the fintech startup -- what breaks, what works, and why clarity beats process every time. engineering leadership teams API Rate Limiting: What Actually Works · 7 min Algorithms, headers, and deployment patterns for rate limiting APIs -- drawn from building financial data services at the fintech startup. api backend architecture What Building Distributed Systems at a Fintech Startup Taught Me About Failure · 6 min Hard-won lessons from designing distributed systems that survive real failures -- timeouts, retries, bulkheads, and the habits that keep things running. distributed-systems reliability architecture Serverless: What Works, What Doesn't, and What Will Bite You · 6 min Real patterns and antipatterns from running serverless at the fintech startup. Where Lambda shines, where it hurts, and how to tell the difference. cloud architecture Database Sharding: You Probably Don't Need It Yet · 8 min Most teams shard too early. Here's how we thought about it at the fintech startup, when it actually makes sense, and the SQL-level decisions that matter most. databases architecture Securing Microservices: What Actually Works · 7 min You split the monolith. Now every service-to-service call is an attack surface. How I think about identity, authorization, encryption, and secrets management. security microservices architecture Event Sourcing in Practice: What I Got Right and Wrong · 7 min Lessons from building event-sourced systems at the fintech startup -- the patterns that held up, the modeling mistakes, and the operational realities. architecture distributed-systems business Zero Trust Is Not a Product. Here's How We Actually Built It. · 5 min Perimeter security is dead. How I replaced castle-and-moat at the fintech startup with zero trust — identity-first, micro-segmented, no implicit trust. security architecture infrastructure Stop Trying to Fix All Your Tech Debt · 4 min A two-number scoring system for tech debt that tells you what to fix now, what to schedule, and what to quietly accept. technical-debt engineering strategy Async by Default: Reducing Decision Latency in Distributed Engineering Teams · 4 min A practical operating model for async-first communication that reduces decision latency without sacrificing alignment. remote-work leadership teams Multi-Region Architecture: What I Wish Someone Had Told Me · 6 min What I learned evaluating multi-region at the fintech startup: the patterns that work, the ones that burn you, and when you should even bother. architecture distributed-systems cloud Serverless Patterns That Actually Work in Production · 2 min Most serverless tutorials teach you the wrong thing. Here's what matters when you're running it for real. cloud architecture API Versioning: What Actually Works and What Doesn't · 4 min We tried multiple API versioning approaches at the fintech startup. URL path versioning won. Here's why, and how to deprecate without burning consumers. api architecture How I Build Data Pipelines That Actually Survive Production · 6 min Every pipeline I've built at the fintech startup broke at some point. Here's the design approach that made them recoverable instead of catastrophic. data reliability architecture Why We Went Event-Driven (and What Nearly Broke) · 5 min Lessons from building event-driven systems at the fintech startup and a mobility startup -- what worked, what broke, and why I'd do it again. architecture microservices GraphQL vs REST: Pick the Boring One · 4 min Everyone wants to debate GraphQL vs REST like it's a religion. It's not. One reduces round trips, the other is dead simple to cache. Here's how I actually decide. api architecture Why We Chose Go for Our Backend Services · 6 min How Go became the default backend language at a mobility startup and a fintech startup, what it replaced, and the honest tradeoffs we accepted along the way. go backend engineering The Economics of State: Why Scaling Up Beats Sharding (Until It Doesn't) · 8 min A production-grounded case for exhausting single-server headroom with pooling, replicas, and partitioning before taking on sharding complexity. databases architecture engineering Building Resilient Systems: Lessons from Production Failures · 7 min Production incidents show where architecture bends and breaks. Lessons on designing for failure, limiting blast radius, and making recovery routine. reliability architecture engineering API Design Principles That Stand the Test of Time · 5 min Lessons from building a fintech financial data API: the REST conventions that actually matter, the ones that don't, and why consistency beats cleverness. api engineering architecture Postgres vs MySQL in 2016: A Practical Comparison · 5 min A grounded look at PostgreSQL and MySQL as of April 2016, focusing on integrity, query power, and operational tradeoffs rather than benchmark hype. databases architecture engineering AWS Lambda: When Serverless Makes Sense (And When It Doesn't) · 4 min Lambda is a sharp tool for specific jobs. The problem is everyone wants to use it for everything. cloud architecture The True Cost of Technical Debt · 3 min A pragmatic look at technical debt: how it shows up, how to measure it, and how to make a business case for paying it down without stalling delivery. technical-debt engineering leadership Why Microservices Aren't Always the Answer · 5 min Most teams adopt microservices too early and pay for complexity they don't need yet. A well-structured monolith is faster, simpler, and keeps your options open. architecture microservices startups
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