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web/api: null-safe pages, per-target pressure, matrix z-scores, stricter affected regions

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Simon-Pierre Boucher committed 12 days ago (Sep 12, 2026) parent e24e1a4

4 changed files +67 −5

modified apps/api/src/internetpressure/api/public.py +30 −2
@@ -345,6 +345,7 @@ async def service(slug: str) -> dict[str, Any]:
345 345 base = await ch.query_one(f"""SELECT quantileTDigest(0.5)(ttfb_ms) AS ttfb FROM measurements WHERE kind='http' AND target_id IN ({','.join(f"'{_esc(t)}'" for t in tids) or "''"})
346 346 AND ts >= now() - INTERVAL 7 DAY AND ts < now() - INTERVAL 10 MINUTE""") if tids else {}
347 347 probes = {p["probe_id"]: p for p in await list_probes()}
348 + zbase = await _ttfb_baselines(tids)
348 349 matrix = []
349 350 latest_by_target: dict[str, dict[str, Any]] = {}
350 351 for tid in tids:
@@ -355,7 +356,7 @@ async def service(slug: str) -> dict[str, Any]:
355 356 for tid in tids:
356 357 m = latest_by_target.get(tid, {}).get(f"{pid}|http|")
357 358 if m:
358 − row["targets"].append({"target_id": tid, "ok": bool(m["ok"]), "ttfb_ms": r1(m.get("ttfb_ms")), "z": None, "ts": m["ts"],
359 + row["targets"].append({"target_id": tid, "ok": bool(m["ok"]), "ttfb_ms": r1(m.get("ttfb_ms")), "z": _z_of(zbase.get((pid, tid)), m.get("ttfb_ms")), "ts": m["ts"],
359 360 "error": m.get("error") or None, "http_status": m.get("http_status")})
360 361 if row["targets"]:
361 362 matrix.append(row)
@@ -386,6 +387,28 @@ async def service(slug: str) -> dict[str, Any]:
386 387
387 388 # ── targets & probes ────────────────────────────────────────────────────────────────────────────────────────────────
388 389
390 +async def _ttfb_baselines(target_ids: list[str]) -> dict[tuple[str, str], tuple[float, float, float]]:
391 + """7-day TTFB quartiles per (probe, target) — used for the robust z shown in matrices."""
392 + if not target_ids:
393 + return {}
394 + ids = ",".join(f"'{_esc(t)}'" for t in target_ids)
395 + rows = await ch.query(f"""
396 + SELECT probe_id, target_id, quantilesTDigest(0.25, 0.5, 0.75)(ttfb_ms) AS q FROM measurements
397 + WHERE kind='http' AND target_id IN ({ids}) AND ts >= now() - INTERVAL 7 DAY AND ts < now() - INTERVAL 10 MINUTE
398 + GROUP BY probe_id, target_id HAVING count() >= 20
399 + """)
400 + return {(r["probe_id"], r["target_id"]): tuple(float(x) for x in r["q"]) for r in rows if r.get("q") and None not in r["q"]}
401 +
402 +
403 +def _z_of(q: tuple[float, float, float] | None, current: Any) -> float | None:
404 + if not q or current is None:
405 + return None
406 + from ..engine import scoring as S
407 +
408 + z = S.robust_z(float(current), q[1], S.mad_from_iqr(q[0], q[2]))
409 + return r2(z)
410 +
411 +
389 412 async def _targets_summary(targets: list[dict[str, Any]]) -> list[dict[str, Any]]:
390 413 if not targets:
391 414 return []
@@ -395,12 +418,13 @@ async def _targets_summary(targets: list[dict[str, Any]]) -> list[dict[str, Any]
395 418 WHERE kind='http' AND target_id IN ({ids}) AND ts >= now() - INTERVAL 1 HOUR GROUP BY target_id
396 419 """)
397 420 stats = {r["target_id"]: r for r in rows}
421 + tp = await _live("target_pressure") or {}
398 422 out = []
399 423 for t in targets:
400 424 s = stats.get(t["target_id"], {})
401 425 out.append({"target_id": t["target_id"], "name": t["name"], "hostname": t["hostname"], "category": t["category"],
402 426 "provider": t.get("provider"), "service_id": t.get("service_id"), "country": t.get("country"), "region": t["region"],
403 − "importance": t["importance"], "tier": t["tier"], "pressure": None,
427 + "importance": t["importance"], "tier": t["tier"], "pressure": tp.get(t["target_id"]),
404 428 "ok_ratio_1h": r3(s.get("ok_ratio")), "ttfb_ms_median_1h": r1(s.get("ttfb"))})
405 429 return out
406 430
@@ -427,6 +451,10 @@ async def target(target_id: str) -> dict[str, Any]:
427 451 "dns_ms": r1(m.get("dns_ms")), "tcp_ms": r1(m.get("tcp_ms")), "tls_ms": r1(m.get("tls_ms")), "ttfb_ms": r1(m.get("ttfb_ms")),
428 452 "http_status": m.get("http_status"), "resolved_ip": m.get("resolved_ip") or None, "packet_loss": m.get("packet_loss"),
429 453 "rtt_avg_ms": r1(m.get("rtt_avg_ms")), "dns_rcode": m.get("dns_rcode") or None, "dns_answers": m.get("dns_answers"), "z": None})
454 + zb = await _ttfb_baselines([target_id])
455 + for m in latest:
456 + if m["kind"] == "http":
457 + m["z"] = _z_of(zb.get((m["probe_id"], target_id)), m.get("ttfb_ms"))
430 458 latest.sort(key=lambda x: (x["probe_id"], x["kind"], x["resolver"] or ""))
431 459 series = await ch.query(f"""
432 460 SELECT toStartOfFifteenMinutes(ts) AS b, quantileTDigest(0.5)(ttfb_ms) AS ttfb, avg(ok) AS ok_ratio FROM measurements
modified apps/api/src/internetpressure/engine/loop.py +34 −1
@@ -204,7 +204,7 @@ class Engine:
204 204 vs = next((v for v in vendor_rows if v["service_slug"] == slug), None)
205 205 pr = sc.pressure if allowed else None
206 206 lv, ll = cfg.level_for(pr)
207 − affected = sorted({s.tags.src_region for s in buckets.get(("service", slug), []) if s.pair.stress >= 0.4 and s.tags.probe_id != "*"})
207 + affected = _affected_regions(buckets.get(("service", slug), []), sc.pressure if allowed else None)
208 208 services_out.append({
209 209 "slug": slug, "name": svc["name"], "category": svc.get("category"), "importance": svc.get("importance"),
210 210 "pressure": r1(pr), "level": lv, "level_label": ll, "confidence": sc.confidence,
@@ -256,6 +256,8 @@ class Engine:
256 256 route_changes_1h = sum(1 for s in sigs if s.signal_id == "route_change_rate" and (s.pair.current or 0) >= 1.0)
257 257 extra = {"dns_failures_per_min": round(dns_fail_2m / max(1.0, window / 60.0), 1), "route_changes_per_min": round(route_changes_1h / 60.0, 2)}
258 258 targets_by_asn = {k[1]: sorted({s.tags.target_id for s in buckets[k]}) for k in asn_keys}
259 + target_pressure = _target_pressure(sigs, float(eng.get("saturation_k", 1.2))) if allowed else {}
260 + await rds.set_json("ip:live:target_pressure", target_pressure)
259 261 await rds.set_json("ip:live:latency", lat)
260 262 await rds.set_json("ip:live:extra", extra)
261 263 await rds.set_json("ip:live:targets_by_asn", targets_by_asn)
@@ -414,6 +416,37 @@ class Engine:
414 416 log.warning("history insert failed: %s", exc)
415 417
416 418
419 +def _affected_regions(sigs, pressure: float | None) -> list[str]: # type: ignore[no-untyped-def]
420 + """Probe regions whose importance-weighted mean stress toward this service is ≥ 0.3 — only when the service
421 + itself is at least 'normal-high' (≥ 20), so a single noisy pair never flags a region."""
422 + if pressure is None or pressure < 20:
423 + return []
424 + acc: dict[str, list[float]] = {}
425 + for s in sigs:
426 + if s.tags.probe_id == "*":
427 + continue
428 + acc.setdefault(s.tags.src_region, []).append((s.pair.stress, s.pair.weight)) # type: ignore[arg-type]
429 + out = []
430 + for reg, pairs in acc.items():
431 + tw = sum(w for _, w in pairs)
432 + if tw > 0 and sum(st * w for st, w in pairs) / tw >= 0.3:
433 + out.append(reg)
434 + return sorted(out)
435 +
436 +
437 +def _target_pressure(sigs, k: float) -> dict[str, float]: # type: ignore[no-untyped-def]
438 + """Per-target pressure = saturated importance/coverage-weighted mean stress of all its pair signals."""
439 + acc: dict[str, list[tuple[float, float]]] = {}
440 + for s in sigs:
441 + acc.setdefault(s.tags.target_id, []).append((s.pair.stress, s.pair.weight))
442 + out: dict[str, float] = {}
443 + for tid, pairs in acc.items():
444 + tw = sum(w for _, w in pairs)
445 + if tw > 0:
446 + out[tid] = round(S.saturate(sum(st * w for st, w in pairs) / tw, k), 1)
447 + return out
448 +
449 +
417 450 def _f(v: Any) -> float | None:
418 451 try:
419 452 return None if v is None else float(v)
modified apps/web/src/app/(site)/methodology/page.tsx +1 −1
@@ -17,7 +17,7 @@ export default async function MethodologyPage() {
17 17 return (
18 18 <div className="pb-8">
19 19 <header className="pt-6 pb-4">
20 − <p className="label">Methodology {m ? <span className="num normal-case tracking-normal text-ink-3">· config v{m.version} · updated {m.updated_at.slice(0, 10)}</span> : <span className="text-warn">· live config unavailable, showing documented defaults</span>}</p>
20 + <p className="label">Methodology {m ? <span className="num normal-case tracking-normal text-ink-3">· config v{m.version} · {m.updated_at ? `updated ${m.updated_at.slice(0, 10)}` : `source: ${m.source ?? "file"}`}</span> : <span className="text-warn">· live config unavailable, showing documented defaults</span>}</p>
21 21 <h1 className="mt-1 text-[26px] font-medium tracking-tight sm:text-[32px]">How the pressure is computed</h1>
22 22 <p className="mt-2 max-w-[780px] text-[14px] leading-relaxed text-ink-2">The Global Internet Pressure Index is a composite observability index between 0 and 100 describing how stressed, unstable, congested, degraded or abnormal the public Internet currently is. It is not scientific truth and it is not an uptime percentage: it is a baseline-relative synthesis of independent telemetry, and every number on this site decomposes into the signals that produced it.</p>
23 23 </header>
modified apps/web/src/lib/types.ts +2 −1
@@ -536,7 +536,8 @@ export interface Methodology {
536 536 events?: Record<string, number>;
537 537 fronts?: Record<string, number>;
538 538 version: number;
539 − updated_at: string;
539 + updated_at: string | null;
540 + source?: string;
540 541 }
541 542
542 543 export interface SearchResult {
543 544