Data Shared (all languages) active any

Durable or cross-process data uses versionable formats and mixed-version-safe evolution

data-010

Intent

Keep durable and cross-process data decodable and safe across rolling upgrades and long-lived storage.

Applicability

Applies to stored records, events, messages, snapshots, and replicated files. Return unknown when format ownership is fully external.

What to inspect

Serialization formats, schema files, record metadata, unknown-field handling, and compatibility rules for mixed readers and writers.

Pass criteria

Durable data uses explicit versionable formats, readers tolerate compatible evolution, writer-schema identity is available when required, and read-modify-write flows preserve unknown fields.

Fail criteria

Code persists runtime-native object serialization, introduces incompatible schema changes without compatibility support, or rewrites records in ways that drop newer unknown fields.

Do not flag

Purely transient in-memory serialization that never crosses process or durability boundaries.

Confidence guidance

HIGH when native object serialization or unsafe rewrite behavior is visible. MEDIUM when compatibility metadata may be external. LOW when only interface types are shown.

Remediation

Use explicit schema-driven formats and preserve backward or forward compatibility during mixed-version operation.

Pass example

{ "schema_version": 2, "name": "Ava", "nickname": null }

Fail example

out.writeObject(order);