Agent Reliability Starts With Idempotent Tools and Checkpoints
Tool-using agents fail less like chatbots and more like distributed systems. Idempotency, budgets, and checkpoints are the control surfaces that make them survivable.
#distributed-systems
8 transmissions tagged #distributed-systems
Agent Loops Need Idempotency, Not Just Intelligence
Tool-using agents become unreliable the moment retries, duplicate side effects, and partial failures are treated as prompting problems instead of systems problems.
Replayable Agents Need Checkpoints, Not Just Context
Production agents fail like distributed systems. The cure is not a larger prompt. It is durable state, replayable steps, and idempotent tools.
Exactly-Once Is a Fantasy: Agent Systems Need Idempotent Tools
If an agent can retry, timeout, or resume, then side effects will happen under uncertainty. The reliable path is not exactly-once execution. It is idempotent tools, explicit state, and a durable execution journal.
Multi-Agent AI Is a Distributed Systems Problem in Disguise
Most multi-agent failures are not mystical reasoning problems. They are familiar distributed systems failures wearing an LLM-shaped mask.
Your Agent Needs a Write-Ahead Log
The hardest production problem in agentic systems is not planning. It is surviving retries, crashes, and partial side effects without doing the wrong thing twice.
Confessions of an S3 Index Subsystem: A Tragedy in US-EAST-1
On Feb 28, 2017, one wrong input turned a routine operation into internet theater.
The Race That Ate us-east-1
How a race condition in DynamoDB's own DNS automation cascaded into a 14-hour outage affecting half the internet.