kite/.planning/phases/06-performance-production-hardening/06-01-SUMMARY.md

phase, plan, subsystem, tags, dependency_graph, tech_stack, key_files, decisions, metrics

phase	plan	subsystem	tags	dependency_graph	tech_stack	key_files	decisions	metrics
06-performance-production-hardening	01	observability/rate-limiting/load-testing	wave-0 xfail-scaffold structured-logging rate-limiting locust nyquist	requires provides affects backend/tests/test_logging.py — 5 xfail stubs for D-01/D-02 backend/tests/test_rate_limiting.py — 8 xfail stubs for D-11/D-12 + A1 gate backend/load_tests/__init__.py — pytest exclusion marker backend/load_tests/locustfile.py — Locust HttpUser skeleton	added patterns xfail(strict=False) Wave 0 scaffold — all stubs single-line body pytest.xfail('not implemented yet') Locust HttpUser skeleton with NotImplementedError bodies and env-var credential pickup Empty __init__.py package marker excludes load_tests from pytest discovery	created modified backend/tests/test_logging.py backend/tests/test_rate_limiting.py backend/load_tests/__init__.py backend/load_tests/locustfile.py	structlog 25.5.0 — approved by user as legitimate (hynek/structlog, CPython core contributor author). Will be added to backend/requirements.txt in plan 06-02. locust 2.34.0 — approved by user as legitimate (locustio/locust, 10+ year history, multi-million monthly downloads). Will be added to backend/requirements-dev.txt in plan 06-03 (dev-only, NOT in requirements.txt). load_tests excluded from pytest via testpaths=tests in pytest.ini — no conftest exclusion needed; locustfile.py filename does not match test_*.py pattern	duration completed tasks_completed files_created files_modified ~60s 2026-06-03 5 4 0

Phase 06 Plan 01: Wave 0 Nyquist Scaffold Summary

Wave 0 xfail test scaffold for Phase 6 structured logging (D-01/D-02), trusted-proxy rate limiting (D-11), per-account rate limiting (D-12), and Locust load-test skeleton (D-04/D-05/D-06).

What Was Built

backend/tests/test_logging.py — 5 xfail stubs for D-01/D-02:

1. test_setup_logging_emits_json_when_LOG_JSON_true — JSON renderer through ProcessorFormatter
2. test_correlation_id_middleware_binds_contextvar — CorrelationIDMiddleware binds to structlog contextvars
3. test_correlation_id_response_header_present — X-Correlation-ID header on every response
4. test_contextvars_cleared_between_requests — Pitfall 2 guard: no context bleed between requests
5. test_uvicorn_access_log_suppressed — uvicorn.access propagate=False

backend/tests/test_rate_limiting.py — 8 xfail stubs for D-11/D-12 + A1 verification:

1. test_get_client_ip_untrusted_returns_direct_peer — untrusted peer ignores XFF
2. test_get_client_ip_trusted_proxy_reads_xff_leftmost — trusted peer reads leftmost XFF
3. test_get_client_ip_trusted_proxy_no_xff_falls_back — trusted peer with no XFF falls back to peer IP
4. test_get_client_ip_invalid_peer_returns_none_or_string — None client returns None safely
5. test_account_limiter_key_uses_user_id — key_func returns str(user.id)
6. test_account_limiter_key_falls_back_to_ip_when_no_user — no user on request.state → IP fallback, no crash
7. test_account_limiter_key_ordering_assumption — A1 gate: verifies slowapi reads request.state.current_user correctly before counting
8. test_authenticated_endpoint_429_after_100_per_minute — full integration 429 check

backend/load_tests/__init__.py — empty package marker (56 bytes)

backend/load_tests/locustfile.py — DocuVaultUser skeleton:

• on_start, _auth_headers, list_documents, upload_document, refresh_token stubs (all raise NotImplementedError)
• check_sla SLA listener registered via @events.quitting.add_listener
• Credentials from LOAD_TEST_EMAIL/LOAD_TEST_PASSWORD env vars only
• Zero application imports

Test Suite Results

Metric	Baseline	After Plan 06-01	Delta
Passed	344	344	0
Failed	1 (pre-existing)	1 (pre-existing)	0
Skipped	5	5	0
XFailed	7	20	+13

• 5 new XFAIL in test_logging.py
• 8 new XFAIL in test_rate_limiting.py
• Zero regressions
• Pre-existing failure: test_extractor.py::test_extract_docx (ModuleNotFoundError — carried over from 6.2)

Package Legitimacy Decision (verbatim from checkpoint)

structlog 25.5.0 — APPROVED

• PyPI: https://pypi.org/project/structlog/
• Author: Hynek Schlawack (CPython core contributor)
• Homepage: https://github.com/hynek/structlog
• Action: add to backend/requirements.txt in plan 06-02

locust 2.34.0 — APPROVED (dev-only)

• PyPI: https://pypi.org/project/locust/
• Project: locustio/locust, 10+ years of releases, multi-million monthly downloads
• Action: add to backend/requirements-dev.txt in plan 06-03 (NOT in requirements.txt)

Commits

Task	Commit	Description
2	e1f8874	test(06-01): add 5 xfail stubs for structured logging (D-01/D-02)
3	56d9da7	test(06-01): add 8 xfail stubs for rate limiting (D-11/D-12 + A1)
4	594eb46	feat(06-01): add backend/load_tests/ package skeleton with Locust stub (D-04/D-05/D-06)
5	(verification only — no files changed)	Full suite regression check

Deviations from Plan

None — plan executed exactly as written.

Notes for Downstream Plans

• 06-02 (structured logging): Must turn the 5 test_logging.py stubs green. Install structlog in requirements.txt.
• 06-03 (Locust implementation): Must fill in DocuVaultUser method bodies and check_sla. Install locust in requirements-dev.txt.
• 06-04 (rate limiting): Must turn the 8 test_rate_limiting.py stubs green. The A1 verification test (test_account_limiter_key_ordering_assumption) must be promoted to PASS before applying @account_limiter.limit("100/minute") to all document/cloud endpoints — this test is the explicit gate that turns assumption A1 into a fact.
• pytest discovery: testpaths = tests in pytest.ini already excludes backend/load_tests/; no additional configuration needed.

Self-Check: PASSED

All files created and all commits present:

• FOUND: backend/tests/test_logging.py
• FOUND: backend/tests/test_rate_limiting.py
• FOUND: backend/load_tests/__init__.py
• FOUND: backend/load_tests/locustfile.py
• FOUND: 06-01-SUMMARY.md
• FOUND: commit e1f8874 (test_logging.py)
• FOUND: commit 56d9da7 (test_rate_limiting.py)
• FOUND: commit 594eb46 (load_tests/ skeleton)