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perf: cheap per-frame and per-fetch savings (#725)

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Six small savings with no behaviour change: the odds fetch no longer pretty-prints every response for a debug line; the scroll integer-slice path drops a redundant full-frame np.ascontiguousarray; ledmatrix-web.service gets MALLOC_ARENA_MAX=2 like the display unit; core ESPN responses are parsed via response_json (orjson when installed); and the scroll frame stats go to INFO only for degraded windows plus a 5-minute heartbeat.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Chuck
2026-10-03 14:26:03 -04:00
committed by GitHub
co-authored by Claude Opus 5.5
parent 7bb85c0356
commit ed0753c1ca
12 changed files with 261 additions and 32 deletions
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src/base_odds_manager.py
+22 -13
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@@ -20,6 +20,7 @@ from typing import Dict, Any, Optional, List, cast
from src.common.api_helper import DEFAULT_HTTP_HEADERS
from src.common.fetch_service import fetch_get, share_connection_pool
from src.common.json_body import response_json
@@ -146,7 +147,7 @@ class BaseOddsManager:
if _is_no_odds_marker(cached_data):
self.logger.debug("Cached no-odds marker for %s", cache_key)
return None
self.logger.debug(f"Using cached odds from ESPN for {cache_key}")
self.logger.debug("Using cached odds from ESPN for %s", cache_key)
return cached_data
if time.monotonic() < self._skip_network_until:
@@ -159,7 +160,7 @@ class BaseOddsManager:
self._skip_network_until - time.monotonic())
return None
self.logger.debug(f"Cache miss - fetching fresh odds from ESPN for {cache_key}")
self.logger.debug("Cache miss - fetching fresh odds from ESPN for %s", cache_key)
try:
# Map league names to ESPN API format
@@ -173,26 +174,30 @@ class BaseOddsManager:
espn_league = league_mapping.get(league, league)
url = f"{self.base_url}/{sport}/leagues/{espn_league}/events/{event_id}/competitions/{event_id}/odds"
self.logger.debug(f"Requesting odds from URL: {url}")
self.logger.debug("Requesting odds from URL: %s", url)
# The response cache may answer only inside this caller's own
# interval, the age at which its cached odds expire anyway.
response = fetch_get(self.session, url, timeout=self.request_timeout,
cache_max_age=interval)
response.raise_for_status()
raw_data = response.json()
raw_data = response_json(response)
self._skip_network_until = 0.0 # reachable again
self.logger.debug(f"Received raw odds data from ESPN: {json.dumps(raw_data, indent=2)}")
# Guarded, not just %-style: the json.dumps argument would still be
# built for every response with DEBUG off.
if self.logger.isEnabledFor(logging.DEBUG):
self.logger.debug("Received raw odds data from ESPN: %s",
json.dumps(raw_data, indent=2))
odds_data = self._extract_espn_data(raw_data)
if odds_data:
self.logger.debug(f"Successfully extracted odds data: {odds_data}")
self.logger.debug("Successfully extracted odds data: %s", odds_data)
self.cache_manager.set(cache_key, odds_data, ttl=interval)
self.logger.debug(f"Saved odds data to cache for {cache_key} with TTL {interval}s")
self.logger.debug("Saved odds data to cache for %s with TTL %ss", cache_key, interval)
else:
self.logger.debug(f"No odds data available for {cache_key}")
self.logger.debug("No odds data available for %s", cache_key)
# Cache the absence too, so the game is not re-requested
# on every update until the interval passes.
self.cache_manager.set(cache_key, {"no_odds": True}, ttl=interval)
@@ -226,12 +231,12 @@ class BaseOddsManager:
Returns:
Formatted odds data dictionary or None
"""
self.logger.debug(f"Extracting ESPN odds data. Data keys: {list(data.keys())}")
self.logger.debug("Extracting ESPN odds data. Data keys: %s", list(data.keys()))
if "items" in data and data["items"]:
self.logger.debug(f"Found {len(data['items'])} items in odds data")
self.logger.debug("Found %d items in odds data", len(data['items']))
item = data["items"][0]
self.logger.debug(f"First item keys: {list(item.keys())}")
self.logger.debug("First item keys: %s", list(item.keys()))
# The ESPN API returns odds data directly in the item, not in a
# providers array. ESPN sends explicit JSON nulls for absent
@@ -254,13 +259,17 @@ class BaseOddsManager:
.get("pointSpread") or {}).get("value")
}
}
self.logger.debug(f"Returning extracted odds data: {json.dumps(extracted_data, indent=2)}")
if self.logger.isEnabledFor(logging.DEBUG):
self.logger.debug("Returning extracted odds data: %s",
json.dumps(extracted_data, indent=2))
return extracted_data
# Check if this is a valid empty response or an unexpected structure
if "count" in data and data["count"] == 0 and "items" in data and data["items"] == []:
# This is a valid empty response - no odds available for this game
self.logger.debug(f"No odds available for this game. Response: {json.dumps(data, indent=2)}")
if self.logger.isEnabledFor(logging.DEBUG):
self.logger.debug("No odds available for this game. Response: %s",
json.dumps(data, indent=2))
return None
else:
# This is an unexpected response structure