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Revert "Cache leaderboard summaries (30s TTL)" #209

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Merged
msaroufim merged 1 commit into from
Feb 26, 2026
Merged

Revert "Cache leaderboard summaries (30s TTL)" #209

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19 changes: 1 addition & 18 deletions kernelboard/api/leaderboard_summaries.py
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Original file line number Diff line number Diff line change
Expand Up @@ -13,28 +13,13 @@
"leaderboard_summaries_bp", __name__, url_prefix="/leaderboard-summaries"
)

# In-memory cache keyed by query version ("v1" / "v2")
_cache: dict = {}
CACHE_TTL_SECONDS = 30


@leaderboard_summaries_bp.route("", methods=["GET"])
def index():
total_start = time.perf_counter()

# Check if legacy v1 query is requested (v2 is now default)
use_v1 = request.args.get("v1_query") is not None
version = "v1" if use_v1 else "v2"

# Return cached data if still valid
now = time.time()
cached = _cache.get(version)
if cached and (now - cached["timestamp"]) < CACHE_TTL_SECONDS:
total_time = (time.perf_counter() - total_start) * 1000
logger.info("[Perf] leaderboard_summaries (%s) | cache_hit | total=%.2fms", version, total_time)
return http_success(
{"leaderboards": cached["data"], "now": datetime.now(timezone.utc)}
)

# 1. Database connection
db_conn_start = time.perf_counter()
Expand All @@ -56,12 +41,10 @@ def index():
lb["gpu_types"] = []
transform_time = (time.perf_counter() - transform_start) * 1000

# Update cache
_cache[version] = {"data": leaderboards, "timestamp": time.time()}

total_time = (time.perf_counter() - total_start) * 1000

# Log timing breakdown
version = "v1" if use_v1 else "v2"
logger.info(
"[Perf] leaderboard_summaries (%s) | "
"db_conn=%.2fms | query=%.2fms | transform=%.2fms | total=%.2fms",
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