remove redis (#629)

### What problem does this PR solve?

### Type of change

- [x] Refactoring

rag/svr/task_broker.py

@@ -90,12 +90,6 @@ def dispatch():
         try:
             bucket, name = File2DocumentService.get_minio_address(doc_id=r["id"])
             file_bin = MINIO.get(bucket, name)
-            if REDIS_CONN.is_alive():
-                try:
-                    REDIS_CONN.set("{}/{}".format(bucket, name), file_bin, 12*60)
-                except Exception as e:
-                    cron_logger.warning("Put into redis[EXCEPTION]:" + str(e))
-
             if r["type"] == FileType.PDF.value:
                 do_layout = r["parser_config"].get("layout_recognize", True)
                 pages = PdfParser.total_page_number(r["name"], file_bin)

rag/svr/task_executor.py

@@ -107,18 +107,6 @@ def collect(comm, mod, tm):
 
 def get_minio_binary(bucket, name):
     global MINIO
-    if REDIS_CONN.is_alive():
-        try:
-            for _ in range(30):
-                if REDIS_CONN.exist("{}/{}".format(bucket, name)):
-                    time.sleep(1)
-                    break
-                time.sleep(1)
-            r = REDIS_CONN.get("{}/{}".format(bucket, name))
-            if r: return r
-            cron_logger.warning("Cache missing: {}".format(name))
-        except Exception as e:
-            cron_logger.warning("Get redis[EXCEPTION]:" + str(e))
     return MINIO.get(bucket, name)