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diff --git a/text111.py b/text111.py
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+++ b/text111.py
@@ -0,0 +1,380 @@
+import json
+import random
+import time
+import sqlite3
+import requests
+import threading
+from typing import Any, Dict, Optional, Tuple, List
+from concurrent.futures import ThreadPoolExecutor, as_completed
+from requests.adapters import HTTPAdapter
+from urllib3.util.retry import Retry
+
+GAMMA = "https://gamma-api.polymarket.com"
+CLOB = "https://clob.polymarket.com"
+INTERVAL_SEC = 15 * 60  # 900
+FETCH_INTERVAL = 0.5  # 每0.5秒获取一次，即每秒2次
+
+# 支持的币种列表
+CRYPTOS = [
+    {"symbol": "btc", "slug_prefix": "btc-updown-15m"},
+    {"symbol": "sol", "slug_prefix": "sol-updown-15m"},
+    {"symbol": "eth", "slug_prefix": "eth-updown-15m"},
+    {"symbol": "xrp", "slug_prefix": "xrp-updown-15m"},
+]
+
+
+def make_session() -> requests.Session:
+    """创建带有重试机制的HTTP会话"""
+    s = requests.Session()
+
+    proxies = {
+        'http': f'http://127.0.0.1:{random.randint(20001, 25000)}',
+        'https': f'http://127.0.0.1:{random.randint(20001, 25000)}',
+    }
+
+    s.proxies.update(proxies)
+
+    s.headers.update({"User-Agent": "Mozilla/5.0"})
+    retry = Retry(
+        total=5,
+        backoff_factor=0.4,
+        status_forcelist=(429, 500, 502, 503, 504),
+        allowed_methods=("GET",),
+        raise_on_status=False,
+    )
+    adapter = HTTPAdapter(max_retries=retry, pool_connections=50, pool_maxsize=50)
+    s.mount("https://", adapter)
+    s.mount("http://", adapter)
+    return s
+
+
+def parse_jsonish_list(v):
+    if v is None:
+        return []
+    if isinstance(v, list):
+        return v
+    if isinstance(v, str):
+        s = v.strip()
+        if s.startswith("[") and s.endswith("]"):
+            return json.loads(s)
+        return [x.strip() for x in s.split(",") if x.strip()]
+    return []
+
+
+def get_market_by_slug(session: requests.Session, slug: str) -> Dict[str, Any]:
+    r = session.get(f"{GAMMA}/markets/slug/{slug}", timeout=20)
+    if r.status_code == 404:
+        raise FileNotFoundError(slug)
+    r.raise_for_status()
+    return r.json()
+
+
+def get_price(session: requests.Session, token_id: str, side: str) -> Optional[float]:
+    r = session.get(f"{CLOB}/price", params={"token_id": token_id, "side": side}, timeout=20)
+    r.raise_for_status()
+    p = r.json().get("price")
+    return float(p) if p is not None else None
+
+
+def get_book(session: requests.Session, token_id: str) -> Dict[str, Any]:
+    r = session.get(f"{CLOB}/book", params={"token_id": token_id}, timeout=20)
+    r.raise_for_status()
+    return r.json()
+
+
+def compute_mid(bid: Optional[float], ask: Optional[float]) -> Tuple[Optional[float], Optional[float]]:
+    if bid is None and ask is None:
+        return None, None
+    if bid is None:
+        return ask, None
+    if ask is None:
+        return bid, None
+    return (bid + ask) / 2.0, (ask - bid)
+
+
+def trim_book(book: Dict[str, Any], top_n: int = 10) -> Dict[str, Any]:
+    bids = book.get("bids") or []
+    asks = book.get("asks") or []
+    bids = sorted(bids, key=lambda x: float(x["price"]), reverse=True)[:top_n]
+    asks = sorted(asks, key=lambda x: float(x["price"]))[:top_n]
+    return {"bids": bids, "asks": asks}
+
+
+def fetch_token_bundle(session: requests.Session, token_id: str, top_n: int = 10) -> Dict[str, Any]:
+    with ThreadPoolExecutor(max_workers=3) as ex:
+        futs = {
+            ex.submit(get_price, session, token_id, "buy"): "bid",
+            ex.submit(get_price, session, token_id, "sell"): "ask",
+            ex.submit(get_book, session, token_id): "book",
+        }
+        out: Dict[str, Any] = {"token_id": token_id}
+        for fut in as_completed(futs):
+            out[futs[fut]] = fut.result()
+
+    mid, spread = compute_mid(out.get("bid"), out.get("ask"))
+    out["mid"] = mid
+    out["spread"] = spread
+    out["book"] = trim_book(out.get("book") or {}, top_n=top_n)
+    return out
+
+
+def current_bucket_ts(interval_sec: int = INTERVAL_SEC, mode: str = "floor") -> int:
+    now = int(time.time())
+    if mode == "ceil":
+        return ((now + interval_sec - 1) // interval_sec) * interval_sec
+    return (now // interval_sec) * interval_sec
+
+
+def build_slug(prefix: str, bucket_ts: int) -> str:
+    return f"{prefix}-{bucket_ts}"
+
+
+def fetch_updown_by_slug(session: requests.Session, slug: str, decimals: int = 0, top_n: int = 10) -> Dict[str, Any]:
+    m = get_market_by_slug(session, slug)
+    outcomes = [str(x) for x in parse_jsonish_list(m.get("outcomes"))]
+    token_ids = [str(x) for x in parse_jsonish_list(m.get("clobTokenIds"))]
+    if len(token_ids) < 2:
+        raise RuntimeError(f"clobTokenIds missing/too short: {token_ids}")
+
+    token_map = dict(zip(outcomes, token_ids))
+    up_id = token_map.get("Up") or token_map.get("Yes") or token_ids[0]
+    dn_id = token_map.get("Down") or token_map.get("No") or token_ids[1]
+
+    with ThreadPoolExecutor(max_workers=2) as ex:
+        up = ex.submit(fetch_token_bundle, session, up_id, top_n).result()
+        dn = ex.submit(fetch_token_bundle, session, dn_id, top_n).result()
+
+    if up["mid"] is None or dn["mid"] is None:
+        return {
+            "error": "missing mid price",
+            "slug": slug,
+            "market_id": m.get("id"),
+            "question": m.get("question"),
+            "up": up,
+            "down": dn,
+        }
+
+    s = float(up["mid"]) + float(dn["mid"])
+    up_pct = round(float(up["mid"]) / s * 100, decimals)
+    dn_pct = round(float(dn["mid"]) / s * 100, decimals)
+
+    return {
+        "question": m.get("question"),
+        "slug": m.get("slug"),
+        "market_id": m.get("id"),
+        "up_pct": up_pct,
+        "down_pct": dn_pct,
+        "up": up,
+        "down": dn,
+    }
+
+
+def fetch_current_market(
+        session: requests.Session,
+        slug_prefix: str = "eth-updown-15m",
+        decimals: int = 0,
+        top_n: int = 10,
+        ts_mode: str = "floor",
+        probe_offsets: Tuple[int, ...] = (0, -INTERVAL_SEC, INTERVAL_SEC),
+) -> Dict[str, Any]:
+    base_ts = current_bucket_ts(INTERVAL_SEC, mode=ts_mode)
+    fetched_at = int(time.time())
+
+    last_err: Optional[Exception] = None
+    for off in probe_offsets:
+        bucket_ts = base_ts + off
+        slug = build_slug(slug_prefix, bucket_ts)
+        try:
+            data = fetch_updown_by_slug(session, slug, decimals=decimals, top_n=top_n)
+            data["bucket_ts"] = bucket_ts
+            data["fetched_at"] = fetched_at
+            return data
+        except FileNotFoundError as e:
+            last_err = e
+            continue
+
+    raise RuntimeError(f"Could not find market for current bucket. last_err={last_err}")
+
+
+# ----------------------------
+# SQLite 数据库操作（添加币种字段）
+# ----------------------------
+DDL = """
+      CREATE TABLE IF NOT EXISTS pm_snapshots
+      (
+          crypto_symbol \
+          TEXT \
+          NOT \
+          NULL,
+          bucket_ts \
+          INTEGER \
+          NOT \
+          NULL,
+          fetched_at \
+          INTEGER \
+          NOT \
+          NULL,
+          raw_json \
+          TEXT \
+          NOT \
+          NULL,
+          PRIMARY \
+          KEY \
+      ( \
+          crypto_symbol, \
+          bucket_ts, \
+          fetched_at \
+      )
+          );
+
+      CREATE INDEX IF NOT EXISTS idx_pm_snapshots_crypto_fetched ON pm_snapshots(crypto_symbol, fetched_at);
+      CREATE INDEX IF NOT EXISTS idx_pm_snapshots_fetched_at ON pm_snapshots(fetched_at); \
+      """
+
+
+def _check_column_exists(conn: sqlite3.Connection, table_name: str, column_name: str) -> bool:
+    """检查表中是否存在指定列"""
+    cursor = conn.cursor()
+    cursor.execute(f"PRAGMA table_info({table_name})")
+    columns = [row[1] for row in cursor.fetchall()]
+    return column_name in columns
+
+
+def _migrate_database(conn: sqlite3.Connection) -> None:
+    """迁移数据库：为旧表添加crypto_symbol列并更新结构"""
+    cursor = conn.cursor()
+
+    # 检查表是否存在
+    cursor.execute("SELECT name FROM sqlite_master WHERE type='table' AND name='pm_snapshots'")
+    if not cursor.fetchone():
+        return  # 表不存在，无需迁移
+
+    # 检查是否需要迁移（是否存在crypto_symbol列）
+    if _check_column_exists(conn, "pm_snapshots", "crypto_symbol"):
+        return  # 列已存在，无需迁移
+
+    print("检测到旧版数据库，开始迁移...")
+
+    # 备份旧表
+    cursor.execute("CREATE TABLE IF NOT EXISTS pm_snapshots_backup AS SELECT * FROM pm_snapshots")
+    print("已备份旧数据到 pm_snapshots_backup 表")
+
+    # 删除旧表和索引
+    cursor.execute("DROP INDEX IF EXISTS idx_pm_snapshots_fetched_at")
+    cursor.execute("DROP TABLE IF EXISTS pm_snapshots")
+
+    # 创建新表结构
+    cursor.executescript(DDL)
+    conn.commit()
+
+    print("数据库迁移完成！旧数据已备份到 pm_snapshots_backup 表")
+
+
+def init_db(db_path: str = "polymarket.db") -> None:
+    conn = sqlite3.connect(db_path)
+    try:
+        conn.execute("PRAGMA journal_mode=WAL;")
+
+        # 先尝试迁移（如果需要）
+        _migrate_database(conn)
+
+        # 执行DDL确保表结构正确
+        conn.executescript(DDL)
+        conn.commit()
+    finally:
+        conn.close()
+
+
+def save_snapshot(crypto_symbol: str, bucket_ts: int, fetched_at: int, raw: Dict[str, Any],
+                  db_path: str = "polymarket.db") -> None:
+    conn = sqlite3.connect(db_path)
+    try:
+        conn.execute("PRAGMA journal_mode=WAL;")
+        conn.execute(
+            "INSERT OR IGNORE INTO pm_snapshots(crypto_symbol, bucket_ts, fetched_at, raw_json) VALUES (?, ?, ?, ?)",
+            (crypto_symbol, int(bucket_ts), int(fetched_at), json.dumps(raw, ensure_ascii=False)),
+        )
+        conn.commit()
+    finally:
+        conn.close()
+
+
+def fetch_crypto_worker(crypto_config: Dict[str, str], db_path: str, stop_event: threading.Event):
+    """为单个币种创建独立的工作线程，每0.5秒获取一次数据"""
+    symbol = crypto_config["symbol"]
+    slug_prefix = crypto_config["slug_prefix"]
+
+    # 为每个币种创建独立的session以提高性能
+    session = make_session()
+
+    print(f"[{symbol.upper()}] 开始抓取数据...")
+
+    while not stop_event.is_set():
+        try:
+            start_time = time.time()
+
+            data = fetch_current_market(
+                session=session,
+                slug_prefix=slug_prefix,
+                decimals=0,
+                top_n=10,
+                ts_mode="floor",
+                probe_offsets=(0, -900, 900),
+            )
+
+            save_snapshot(symbol, data["bucket_ts"], data["fetched_at"], data, db_path)
+
+            elapsed = time.time() - start_time
+            print(
+                f"[{symbol.upper()}] 已保存: bucket_ts={data['bucket_ts']}, fetched_at={data['fetched_at']}, 耗时={elapsed:.2f}秒")
+
+            # 计算需要等待的时间，确保每0.5秒执行一次
+            sleep_time = max(0, FETCH_INTERVAL - elapsed)
+            time.sleep(sleep_time)
+
+        except Exception as e:
+            print(f"[{symbol.upper()}] 错误: {e}")
+            # 出错时也等待一段时间，避免频繁重试
+            time.sleep(0.5)
+
+
+def main():
+    """主函数：启动多个线程并行抓取所有币种数据"""
+    db_path = "polymarket.db"
+    init_db(db_path)
+
+    stop_event = threading.Event()
+    threads: List[threading.Thread] = []
+
+    print("=" * 60)
+    print(f"启动多币种数据抓取程序")
+    print(f"币种数量: {len(CRYPTOS)}")
+    print(f"抓取频率: 每 {FETCH_INTERVAL} 秒一次（每秒 {1 / FETCH_INTERVAL} 次）")
+    print("=" * 60)
+
+    try:
+        # 为每个币种创建一个独立的工作线程
+        for crypto_config in CRYPTOS:
+            thread = threading.Thread(
+                target=fetch_crypto_worker,
+                args=(crypto_config, db_path, stop_event),
+                daemon=True
+            )
+            thread.start()
+            threads.append(thread)
+            print(f"[{crypto_config['symbol'].upper()}] 线程已启动")
+
+        # 等待所有线程
+        for thread in threads:
+            thread.join()
+
+    except KeyboardInterrupt:
+        print("\n收到中断信号，正在停止...")
+        stop_event.set()
+        for thread in threads:
+            thread.join(timeout=2)
+        print("程序已停止")
+
+
+if __name__ == "__main__":
+    main()