The gateway failure register

Ten documented ways API gateways fail in production — each one dated, cited to the vendor's own documentation, and stable enough to link. Selected from an internal audited register of 41 rows across five platforms.

How to read a row: the symptom is what operations sees; the quote is the vendor's own words; the capture date is when we last verified the source. If a row stops being true, we retire it — a register you cannot trust is worse than none.

Gateway API · #k5

“Conformant” does not mean feature-portable between implementations

Vendor's words: “conformance is claimed per Route type and Profile”

↳ Gateway API — Implementations ↗ · verified 2026-08-28

Kong Gateway · #g1

Rate limits silently multiply by node count during a Redis outage

Vendor's words: “the plugin will fall back to local rate limiting”

↳ Kong — Rate Limiting Advanced ↗ · verified 2026-08-28

Kong Gateway · #g2

The cluster strategy cannot be used where teams most expect it

Vendor's words: “Not supported in hybrid mode or Konnect deployments”

↳ Kong — Rate Limiting Advanced ↗ · verified 2026-08-28

Azure API Management · #a1

At capacity the gateway degrades instead of shedding load

Vendor's words: “it will act like an overloaded web server”

↳ Microsoft Learn — APIM capacity ↗ · verified 2026-08-28

Azure API Management · #a2

Capacity dashboards are misread as traffic dashboards

Vendor's words: “not direct measures of the number of requests”

↳ Microsoft Learn — APIM capacity ↗ · verified 2026-08-28

Amazon API Gateway · #w1

Request and response bodies vanish from the audit trail

Vendor's words: “log events larger than 1024 bytes… will be truncated”

↳ AWS — API Gateway important notes ↗ · verified 2026-08-28

Amazon API Gateway · #w3

One noisy API throttles every other API in the account

Vendor's words: “is not a quota that a customer can control”

↳ AWS — API Gateway quotas ↗ · verified 2026-08-28

MuleSoft Anypoint · #m1

The usage-based bill is set by one peak hour, not by average load

Vendor's words: “the highest number of flows that exist in a single given hour”

↳ MuleSoft docs — usage metrics ↗ · verified 2026-08-28

What this register is for

These ten rows are public. The full 41-row register — applied to your estate, with your ceilings measured and a runbook you keep — is the fixed-scope assessment we deliver.

Score your own exposure (free self-assessment) → Fixed-scope assessments →