diff --git a/.env b/.env
index 9d756ff..3b4a563 100644
--- a/.env
+++ b/.env
@@ -58,9 +58,10 @@ TEI_MAX_CLIENT_BATCH_SIZE=8
 BACKEND_PROXY_URL=http://127.0.0.1:6002
 
 # ===== test env connectivity overrides (2026-04-12) =====
-REDIS_HOST=127.0.0.1
+REDIS_HOST=localhost
 REDIS_PORT=6479
 REDIS_PASSWORD=BMfv5aI31kgHWtlx
+REDIS_DB=6
 DB_HOST=120.79.247.228
 DB_PORT=3316
 DB_DATABASE=saas
diff --git a/.env.example b/.env.example
index cab8be8..f248b88 100644
--- a/.env.example
+++ b/.env.example
@@ -12,6 +12,8 @@ ES_PASSWORD=
 # Redis (生产默认 10.200.16.14:6479，密码见 docs/QUICKSTART.md §1.6)
 REDIS_HOST=10.200.16.14
 REDIS_PORT=6479
+# 逻辑库编号（与 config.yaml infrastructure.redis.snapshot_db 一致；测试可与生产共用实例时用不同 db 隔离）
+REDIS_DB=0
 REDIS_PASSWORD=
 
 # DeepL Translation API
diff --git a/config/environments/test.yaml b/config/environments/test.yaml
index 1c8a357..d3b062f 100644
--- a/config/environments/test.yaml
+++ b/config/environments/test.yaml
@@ -1,13 +1,4 @@
-query_config:
-  enable_text_embedding: true
-  text_embedding_field: title_embedding
-  zh_to_en_model: deepl
-  en_to_zh_model: deepl
-  default_translation_model: deepl
-  zh_to_en_model__source_not_in_index: deepl
-  en_to_zh_model__source_not_in_index: deepl
-  default_translation_model__source_not_in_index: deepl
-
+# 仅覆盖与主干不同的测试环境项；query / translation / redis 等与 config.yaml 一致处不写在此文件中。
 infrastructure:
   elasticsearch:
     host: http://127.0.0.1:19200
@@ -28,24 +19,6 @@ services:
         model_id: BAAI/bge-m3
         timeout_sec: 60
         max_client_batch_size: 8
-  translation:
-    service_url: http://127.0.0.1:6006
-    default_model: deepl
-    default_scene: general
-    timeout_sec: 10.0
-    capabilities:
-      qwen-mt:
-        enabled: false
-      llm:
-        enabled: false
-      deepl:
-        enabled: true
-      nllb-200-distilled-600m:
-        enabled: false
-      opus-mt-zh-en:
-        enabled: false
-      opus-mt-en-zh:
-        enabled: false
 
 fine_rank:
   enabled: false
diff --git a/config/loader.py b/config/loader.py
index 5306f8c..16a4fc9 100644
--- a/config/loader.py
+++ b/config/loader.py
@@ -822,6 +822,13 @@ class AppConfigLoader:
 
     def _build_infrastructure_config(self, environment: str) -> InfrastructureConfig:
         del environment
+        _redis_db_raw = os.getenv("REDIS_DB") or os.getenv("REDIS_SNAPSHOT_DB")
+        _redis_db = 0
+        if _redis_db_raw is not None and str(_redis_db_raw).strip() != "":
+            try:
+                _redis_db = int(str(_redis_db_raw).strip())
+            except ValueError:
+                _redis_db = 0
         return InfrastructureConfig(
             elasticsearch=ElasticsearchSettings(
                 host=os.getenv("ES_HOST", "http://localhost:9200"),
@@ -831,7 +838,7 @@ class AppConfigLoader:
             redis=RedisSettings(
                 host=os.getenv("REDIS_HOST", "localhost"),
                 port=int(os.getenv("REDIS_PORT", 6479)),
-                snapshot_db=int(os.getenv("REDIS_SNAPSHOT_DB", 0)),
+                snapshot_db=_redis_db,
                 password=os.getenv("REDIS_PASSWORD"),
                 socket_timeout=int(os.getenv("REDIS_SOCKET_TIMEOUT", 1)),
                 socket_connect_timeout=int(os.getenv("REDIS_SOCKET_CONNECT_TIMEOUT", 1)),
diff --git a/embeddings/redis_embedding_cache.py b/embeddings/redis_embedding_cache.py
index ed1b2c3..11f31d8 100644
--- a/embeddings/redis_embedding_cache.py
+++ b/embeddings/redis_embedding_cache.py
@@ -53,6 +53,7 @@ class RedisEmbeddingCache:
             client = redis.Redis(
                 host=redis_config.host,
                 port=redis_config.port,
+                db=redis_config.snapshot_db,
                 password=redis_config.password,
                 decode_responses=False,
                 socket_timeout=redis_config.socket_timeout,
diff --git a/indexer/product_enrich.py b/indexer/product_enrich.py
index c3397fb..084c910 100644
--- a/indexer/product_enrich.py
+++ b/indexer/product_enrich.py
@@ -124,6 +124,7 @@ try:
     _anchor_redis = redis.Redis(
         host=_REDIS_CONFIG.host,
         port=_REDIS_CONFIG.port,
+        db=_REDIS_CONFIG.snapshot_db,
         password=_REDIS_CONFIG.password,
         decode_responses=True,
         socket_timeout=_REDIS_CONFIG.socket_timeout,
diff --git a/models b/models
deleted file mode 120000
index 8592557..0000000
--- a/models
+++ /dev/null
@@ -1 +0,0 @@
-/data-model/saas-search/models
\ No newline at end of file
diff --git a/translation/cache.py b/translation/cache.py
index 23bc550..0352fd6 100644
--- a/translation/cache.py
+++ b/translation/cache.py
@@ -87,6 +87,7 @@ class TranslationCache:
             client = redis.Redis(
                 host=redis_config.host,
                 port=redis_config.port,
+                db=redis_config.snapshot_db,
                 password=redis_config.password,
                 decode_responses=True,
                 socket_timeout=redis_config.socket_timeout,
--
libgit2 0.21.2