Update scripts/cache_parallel.py: speed + balance + correctness fixes

scripts/cache_parallel.py

@@ -30,8 +30,8 @@ def cache_chunk(args):
     ds = OracleDataset(
         data_fetcher=fetcher,
         ohlc_stats_path=db_args['ohlc_stats_path'],
-        horizons_seconds=[60, 180, 300, 600, 1800, 3600, 7200],
-        quantiles=[0.5],
+        horizons_seconds=[30, 60, 120, 240, 420],
+        quantiles=[0.1, 0.5, 0.9],
     )
     ds.sampled_mints = [m for m in ds.sampled_mints if m['mint_address'] in return_map]