Cache Stampede Prevention for production agents

By Michael Samuel Naeem · May 4, 2026 · 6 min read

Cache Stampede Prevention for production agents means you make agent cache stampede prevention observable and interruptible — with a named owner, a measurable signal, and a rollback a tired on-call can run. I reach for this when the path is on a critical user journey; that is also when shortcuts like dual writes without an outbox or CDC story start paging people.

This write-up is specific to agent-cache-stampede-prevention in a agent context, using Postgres, Redis, Temporal for the mechanics while keeping ownership human.

Cache Stampede Prevention for production agents: production checklist

I treat Cache Stampede Prevention for production agents as an operations problem first. The goal is to make agent cache stampede prevention observable and interruptible, not to collect frameworks.

Put a metric on the user-visible effect of agent cache stampede prevention before you optimize internals. If the path is on a critical user journey, you need that graph on day one.

Acceptance check: an on-call engineer can explain system state for agent cache stampede prevention from one dashboard and one runbook page.

Slug-specific note (agent-cache-stampede-prevention): prioritize prevention behavior under load and verify with a fixture named agent-cache-stampede-prevention-smoke.

Inputs, outputs, invariants

Agent loops amplify mistakes: one bad tool call can fan out across systems. For agent cache stampede prevention, that means making failure visible early.

With Postgres, Redis, Temporal, the mechanics are straightforward; the hard part is invariants. The anti-pattern I still see is dual writes without an outbox or CDC story.

Ship behind a flag, canary by cohort, and write the rollback in the PR description. Cache Stampede Prevention for production agents that needs a hero is not done.

Concretely, being able to make agent cache stampede prevention observable and interruptible forces explicit choices: source of truth, timeout budgets, and which errors users see versus operators.

Slug-specific note (agent-cache-stampede-prevention): prioritize prevention behavior under load and verify with a fixture named agent-cache-stampede-prevention-smoke.

# Cache Stampede Prevention for production agents
from dataclasses import dataclass

@dataclass(frozen=True)
class AgentCacheStampedeRequest:
    tenant_id: str
    idempotency_key: str

async def run_agent_cache_stampede_pre(req, deps) -> None:
    if await deps.store.seen(req.idempotency_key):
        return
    with deps.tracer.start_as_current_span("agent-cache-stampede-prevention"):
        await deps.client.execute(req, timeout=2.0)
    await deps.store.mark(req.idempotency_key)

Concurrency, retries, and timeouts

Teams usually discover Cache Stampede Prevention for production agents after a quiet failure — wrong data, slow pages, or a bill spike. Design for the path is on a critical user journey.

Put a metric on the user-visible effect of agent cache stampede prevention before you optimize internals. If the path is on a critical user journey, you need that graph on day one.

Document what 'success' and 'undo' mean in product language. Future reviewers will not share your context on agent cache stampede prevention.

My never-again list for agent cache stampede prevention: dual writes without an outbox or CDC story; shipping without a kill switch; and alerting only on infrastructure CPU.

Slug-specific note (agent-cache-stampede-prevention): prioritize prevention behavior under load and verify with a fixture named agent-cache-stampede-prevention-smoke.

Support and audit workflows

Teams usually discover Cache Stampede Prevention for production agents after a quiet failure — wrong data, slow pages, or a bill spike. Design for the path is on a critical user journey.

Keep side effects at the edges and make every write idempotent. Cache Stampede Prevention for production agents without retry semantics is a future incident write-up.

Ship behind a flag, canary by cohort, and write the rollback in the PR description. Cache Stampede Prevention for production agents that needs a hero is not done.

Review prompts I use: what happens twice, what happens never, what happens partially? If Cache Stampede Prevention for production agents cannot answer, it is not production-ready.

Slug-specific note (agent-cache-stampede-prevention): prioritize prevention behavior under load and verify with a fixture named agent-cache-stampede-prevention-smoke.

Capacity and load notes

Agent loops amplify mistakes: one bad tool call can fan out across systems. For agent cache stampede prevention, that means making failure visible early.

Put a metric on the user-visible effect of agent cache stampede prevention before you optimize internals. If the path is on a critical user journey, you need that graph on day one.

Ship behind a flag, canary by cohort, and write the rollback in the PR description. Cache Stampede Prevention for production agents that needs a hero is not done.

Slug-specific note (agent-cache-stampede-prevention): prioritize prevention behavior under load and verify with a fixture named agent-cache-stampede-prevention-smoke.

Related reading:

• event driven outbox pattern
• designing for observability slos
• saga pattern distributed transactions

Ship gate

Agent loops amplify mistakes: one bad tool call can fan out across systems. For agent cache stampede prevention, that means making failure visible early.

Keep side effects at the edges and make every write idempotent. Cache Stampede Prevention for production agents without retry semantics is a future incident write-up.

Ship behind a flag, canary by cohort, and write the rollback in the PR description. Cache Stampede Prevention for production agents that needs a hero is not done.

Slug-specific note (agent-cache-stampede-prevention): prioritize prevention behavior under load and verify with a fixture named agent-cache-stampede-prevention-smoke.

Practical defaults for Cache Stampede Prevention for production agents

Teams usually discover Cache Stampede Prevention for production agents after a quiet failure — wrong data, slow pages, or a bill spike. Design for the path is on a critical user journey.

With Postgres, Redis, Temporal, the mechanics are straightforward; the hard part is invariants. The anti-pattern I still see is dual writes without an outbox or CDC story.

Document what 'success' and 'undo' mean in product language. Future reviewers will not share your context on agent cache stampede prevention.

Slug-specific note (agent-cache-stampede-prevention): prioritize prevention behavior under load and verify with a fixture named agent-cache-stampede-prevention-smoke.

After a month, delete unused flags and dual paths. agent-cache-stampede-prevention accumulates temporary bridges faster than teams expect.

Review questions before merging agent cache stampede prevention work

I treat Cache Stampede Prevention for production agents as an operations problem first. The goal is to make agent cache stampede prevention observable and interruptible, not to collect frameworks.

With Postgres, Redis, Temporal, the mechanics are straightforward; the hard part is invariants. The anti-pattern I still see is dual writes without an outbox or CDC story.

Ship behind a flag, canary by cohort, and write the rollback in the PR description. Cache Stampede Prevention for production agents that needs a hero is not done.

Slug-specific note (agent-cache-stampede-prevention): prioritize prevention behavior under load and verify with a fixture named agent-cache-stampede-prevention-smoke.

After a month, delete unused flags and dual paths. agent-cache-stampede-prevention accumulates temporary bridges faster than teams expect.

Field notes after thirty days of agent cache stampede prevention

I treat Cache Stampede Prevention for production agents as an operations problem first. The goal is to make agent cache stampede prevention observable and interruptible, not to collect frameworks.

With Postgres, Redis, Temporal, the mechanics are straightforward; the hard part is invariants. The anti-pattern I still see is dual writes without an outbox or CDC story.

Ship behind a flag, canary by cohort, and write the rollback in the PR description. Cache Stampede Prevention for production agents that needs a hero is not done.

Slug-specific note (agent-cache-stampede-prevention): prioritize prevention behavior under load and verify with a fixture named agent-cache-stampede-prevention-smoke.

In review, require a short failure note covering retry, partial deploy, and dual writes without an outbox or CDC story. Missing that note blocks merge.

Resources

• Internal runbook seed: agent-cache-stampede-prevention
• https://12factor.net/
• https://martinfowler.com/