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Verification register Compute & Web Infra

Readiness verdict

Apache Kafka 4.0 (KRaft-only, ZooKeeper removed)

A dated reading of what is claimed, reported, and independently verified in the current evidence.

As of
2026-07-27
Revision
1
Method
v1.3.0

Current reading

Readiness band and full integer triple

AI-assisted assembly · derived results

Readiness band

Mature

Primary summary from verified readiness

Confidence
61% · stale
Computed at
2026-07-27T18:58:59.929283+00:00
Claimed
95

Public ambition and stated capability

Reported
91

Observed practitioner reporting

Verified
82

Independently supported evidence

Gap
+13

Claimed leads verified

Evidence strength Strong

Decision

What the current evidence supports

Human editorial judgment · 2026-07-27

Adopt with guardrails

Why
KRaft-only is now the sole officially production-ready metadata path, closing the decade-long ZooKeeper chapter that WarpStream/Bufstream/AutoMQ/KIP-1150 all assume as their reference point — but real-world fleet data shows most Kafka clusters are cost-overprovisioned relative to their actual load, so right-sizing must precede adoption rather than defaulting to classic full-scale topology
Next
Default any new Kafka deployment to KRaft-only 4.2+ (never legacy ZooKeeper mode, now unsupported); before provisioning, benchmark actual expected throughput against Aiven's 56%-of-clusters-at-or-below-1MB/s finding and route sub-1MB/s workloads to a lighter diskless-Kafka-compatible alternative already tracked in the register (WarpStream, AutoMQ, Bufstream) instead of full RF-3/3-AZ Kafka

Constraints

Blockers

No named blocker is present in the current public projection.

Evidence summary

Derived counts

AI-assisted assembly

Total
6
Tier 1
0
Tier 2
2
Tier 3
4
Supports
3
Contradicts
2
Context
1
Latest observed
2026-02-17

Counts and dates only. Raw signals, private excerpts, trust records, and internal corpus material are not published here.

Publication record

Revisions

Initial public reading

  1. 2026-07-27 Reading moved from mature to mature.

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