diff --git a/modules/core/ingest-api/src/main/java/com/lingniu/ingest/api/event/RawArchiveKeys.java b/modules/core/ingest-api/src/main/java/com/lingniu/ingest/api/event/RawArchiveKeys.java
index f2f14a7b..014098d9 100644
--- a/modules/core/ingest-api/src/main/java/com/lingniu/ingest/api/event/RawArchiveKeys.java
+++ b/modules/core/ingest-api/src/main/java/com/lingniu/ingest/api/event/RawArchiveKeys.java
@@ -11,8 +11,8 @@ import java.util.Map;
  * Shared raw-archive key conventions used by Dispatcher, archive sink, and query services.
  *
  * <p>32960 生产链路里，RAW .bin 文件本体按 {@code 日期/协议/VIN/eventId.bin} 落在 archive 根目录，
- * DuckDB 只保存 {@code archive://...} 引用和查询索引。这个类集中维护 key 规则，避免接收端、落盘端、
- * snapshot 查询端对目录分区的理解不一致。</p>
+ * TDengine raw_frames 或兼容索引只保存 {@code archive://...} 引用。这个类集中维护 key 规则，
+ * 避免接收端、落盘端、snapshot 查询端对目录分区的理解不一致。</p>
  */
 public final class RawArchiveKeys {
 
diff --git a/modules/core/ingest-api/src/main/java/com/lingniu/ingest/api/event/TelemetryFieldValue.java b/modules/core/ingest-api/src/main/java/com/lingniu/ingest/api/event/TelemetryFieldValue.java
index b6fec6b5..d101ad25 100644
--- a/modules/core/ingest-api/src/main/java/com/lingniu/ingest/api/event/TelemetryFieldValue.java
+++ b/modules/core/ingest-api/src/main/java/com/lingniu/ingest/api/event/TelemetryFieldValue.java
@@ -3,11 +3,11 @@ package com.lingniu.ingest.api.event;
 /**
  * One normalized telemetry field value.
  *
- * <p>Protocol mappers use stable internal field keys so Kafka, Parquet, Redis,
+ * <p>Protocol mappers use stable internal field keys so Kafka, TDengine, Redis,
  * and statistics do not depend on protocol-specific names.
  *
  * <p>{@code value} 统一用字符串承载，真实类型由 {@code valueType} 表达。这样 Kafka
- * protobuf、CSV 导出、DuckDB JSON 字段和前端展示可以共用同一份字段结构；数值精度/格式化
+ * protobuf、CSV 导出、JSON 字段和前端展示可以共用同一份字段结构；数值精度/格式化
  * 由查询层或前端按 {@code valueType + unit} 决定。
  */
 public record TelemetryFieldValue(
diff --git a/modules/core/ingest-api/src/main/java/com/lingniu/ingest/api/event/TelemetrySnapshot.java b/modules/core/ingest-api/src/main/java/com/lingniu/ingest/api/event/TelemetrySnapshot.java
index 555b5227..2035eb55 100644
--- a/modules/core/ingest-api/src/main/java/com/lingniu/ingest/api/event/TelemetrySnapshot.java
+++ b/modules/core/ingest-api/src/main/java/com/lingniu/ingest/api/event/TelemetrySnapshot.java
@@ -12,9 +12,9 @@ import java.util.Optional;
 /**
  * Normalized full-field telemetry snapshot for one parsed vehicle event.
  *
- * <p>This is the shared contract for Kafka, Parquet history, Redis hot state,
+ * <p>This is the shared contract for Kafka, TDengine history, Redis hot state,
  * and statistics. It intentionally lives in {@code ingest-api} and has no
- * Spring, Kafka, Redis, or DuckDB dependency.
+ * Spring, Kafka, Redis, or TDengine dependency.
  */
 public record TelemetrySnapshot(
         String eventId,
diff --git a/modules/core/ingest-core/src/main/java/com/lingniu/ingest/core/concurrency/DisruptorEventBus.java b/modules/core/ingest-core/src/main/java/com/lingniu/ingest/core/concurrency/DisruptorEventBus.java
index 92760e25..8e084cd6 100644
--- a/modules/core/ingest-core/src/main/java/com/lingniu/ingest/core/concurrency/DisruptorEventBus.java
+++ b/modules/core/ingest-core/src/main/java/com/lingniu/ingest/core/concurrency/DisruptorEventBus.java
@@ -52,7 +52,7 @@ public final class DisruptorEventBus implements AutoCloseable {
         EventHandler<VehicleEventSlot>[] handlers = this.sinks.stream()
                 .map(this::toHandler)
                 .toArray(EventHandler[]::new);
-        // 每个 sink 一个独立 handler，事件按扇出模式同时写 Kafka、event-file-store 等目标。
+        // 每个 sink 一个独立 handler，事件按扇出模式同时写 Kafka、archive、历史索引等目标。
         disruptor.handleEventsWith(handlers);
         disruptor.start();
         log.info("DisruptorEventBus started ringBuffer={} wait={} sinks={}",
diff --git a/modules/core/ingest-core/src/main/java/com/lingniu/ingest/core/config/IngestCoreAutoConfiguration.java b/modules/core/ingest-core/src/main/java/com/lingniu/ingest/core/config/IngestCoreAutoConfiguration.java
index 3249e85f..d3de0447 100644
--- a/modules/core/ingest-core/src/main/java/com/lingniu/ingest/core/config/IngestCoreAutoConfiguration.java
+++ b/modules/core/ingest-core/src/main/java/com/lingniu/ingest/core/config/IngestCoreAutoConfiguration.java
@@ -24,7 +24,7 @@ import java.util.List;
  *
  * <p>生产链路顺序：入口收到 {@code RawFrame} → {@link InterceptorChain} 做准入 →
  * {@link Dispatcher} 定位协议 Handler → Handler 产出 {@code VehicleEvent} →
- * {@link DisruptorEventBus} 扇出到 Archive、DuckDB、Kafka 等 {@code EventSink}。
+ * {@link DisruptorEventBus} 扇出到 Archive、Kafka、历史索引等 {@code EventSink}。
  */
 @AutoConfiguration
 @EnableConfigurationProperties(IngestCoreProperties.class)
diff --git a/modules/core/ingest-core/src/main/java/com/lingniu/ingest/core/pipeline/builtin/DedupInterceptor.java b/modules/core/ingest-core/src/main/java/com/lingniu/ingest/core/pipeline/builtin/DedupInterceptor.java
index ecffb669..7c4f72f4 100644
--- a/modules/core/ingest-core/src/main/java/com/lingniu/ingest/core/pipeline/builtin/DedupInterceptor.java
+++ b/modules/core/ingest-core/src/main/java/com/lingniu/ingest/core/pipeline/builtin/DedupInterceptor.java
@@ -18,7 +18,7 @@ import java.util.Map;
  * 优先使用已解析 VIN；VIN 未解析时使用 phone/deviceId/terminalId/plate，避免 JT808 多终端在
  * {@code vin=unknown} 时同流水号互相去重。如果上游已经在 {@link RawFrame#sourceMeta()} 里带了
  * {@code seq}，优先用真实流水号；否则退化为 raw bytes fingerprint，避免设备重连或 TCP 重发导致
- * 同一帧重复进入 DuckDB/Archive。
+ * 同一帧重复进入 Archive/Kafka/历史索引。
  *
  * <p>当前缓存是进程内的，只能保证单实例去重。32960 若做多副本水平扩容，需要把这个位置替换成
  * Redis/集中式幂等键，否则不同实例仍可能各自接收一次相同原始包。
diff --git a/modules/protocols/protocol-gb32960/src/main/java/com/lingniu/ingest/protocol/gb32960/handler/Gb32960RealtimeHandler.java b/modules/protocols/protocol-gb32960/src/main/java/com/lingniu/ingest/protocol/gb32960/handler/Gb32960RealtimeHandler.java
index 87d25919..b0480d15 100644
--- a/modules/protocols/protocol-gb32960/src/main/java/com/lingniu/ingest/protocol/gb32960/handler/Gb32960RealtimeHandler.java
+++ b/modules/protocols/protocol-gb32960/src/main/java/com/lingniu/ingest/protocol/gb32960/handler/Gb32960RealtimeHandler.java
@@ -18,7 +18,7 @@ import java.util.List;
  * <p>这是 GB32960 协议在通用 Dispatcher 管线里的**唯一入口** Bean——移除将导致所有
  * GB32960 帧产出的事件丢失。构造器注入 {@link Gb32960EventMapper}，全部业务逻辑限制
  * 在纯函数里，不触碰数据库 / 不做 IO。产出的事件由 Dispatcher 统一投递到 Disruptor；
- * 下游 sink 再决定写 raw archive、DuckDB/Parquet 历史库或转发 Kafka。
+ * 下游 sink 再决定写 raw archive、TDengine 历史库或转发 Kafka。
  *
  * <p>当前 32960 专用 snapshot 查询不依赖 Realtime/Location 事件表，而是通过 raw archive URI
  * 回读原始 .bin 并即时解码合并，避免不同车辆或不同子包之间做大范围 join。
diff --git a/modules/protocols/protocol-gb32960/src/main/java/com/lingniu/ingest/protocol/gb32960/inbound/Gb32960ChannelHandler.java b/modules/protocols/protocol-gb32960/src/main/java/com/lingniu/ingest/protocol/gb32960/inbound/Gb32960ChannelHandler.java
index 437a5539..8df345c4 100644
--- a/modules/protocols/protocol-gb32960/src/main/java/com/lingniu/ingest/protocol/gb32960/inbound/Gb32960ChannelHandler.java
+++ b/modules/protocols/protocol-gb32960/src/main/java/com/lingniu/ingest/protocol/gb32960/inbound/Gb32960ChannelHandler.java
@@ -29,7 +29,7 @@ import java.util.Map;
  * Netty 入站处理器：字节 → Gb32960Message → 认证 → RawFrame → Dispatcher。
  *
  * <p>这是 32960 生产链路的入口边界。它只做协议层职责：解码、鉴权、应答、组装
- * {@link RawFrame} 并投递 Dispatcher；原始包归档、DuckDB/Parquet 索引、Kafka 转发都在
+ * {@link RawFrame} 并投递 Dispatcher；原始包归档、TDengine 历史索引、Kafka 转发都在
  * 下游 sink 中完成，避免 Netty EventLoop 被存储 IO 阻塞。
  *
  * <p>认证逻辑：
diff --git a/modules/protocols/protocol-jt808/src/main/java/com/lingniu/ingest/protocol/jt808/inbound/Jt808ChannelHandler.java b/modules/protocols/protocol-jt808/src/main/java/com/lingniu/ingest/protocol/jt808/inbound/Jt808ChannelHandler.java
index efc26b63..f849f288 100644
--- a/modules/protocols/protocol-jt808/src/main/java/com/lingniu/ingest/protocol/jt808/inbound/Jt808ChannelHandler.java
+++ b/modules/protocols/protocol-jt808/src/main/java/com/lingniu/ingest/protocol/jt808/inbound/Jt808ChannelHandler.java
@@ -111,7 +111,7 @@ public class Jt808ChannelHandler extends SimpleChannelInboundHandler<Object> {
             processDecodedFrame(ctx, frame, msg);
         } catch (RuntimeException e) {
             // 解码成功但业务处理失败时仍派发一条 malformed RawFrame，
-            // 保证原始帧能被 archive/event-file-store 留痕，方便事后排查。
+            // 保证原始帧能被 archive、Kafka 和历史索引留痕，方便事后排查。
             log.warn("[jt808] processing failed peer={} phone={} msgId=0x{} error={}",
                     addr(ctx), msg.header().phone(), Integer.toHexString(msg.header().messageId()), e.getMessage());
             log.debug("[jt808] processing failed stack peer={}", addr(ctx), e);
diff --git a/modules/services/vehicle-state-service/src/main/java/com/lingniu/ingest/vehiclestate/VehicleStateController.java b/modules/services/vehicle-state-service/src/main/java/com/lingniu/ingest/vehiclestate/VehicleStateController.java
index ecb9f973..507114c3 100644
--- a/modules/services/vehicle-state-service/src/main/java/com/lingniu/ingest/vehiclestate/VehicleStateController.java
+++ b/modules/services/vehicle-state-service/src/main/java/com/lingniu/ingest/vehiclestate/VehicleStateController.java
@@ -28,7 +28,7 @@ public final class VehicleStateController {
 
     @GetMapping("/{vin}")
     public ResponseEntity<String> state(@PathVariable String vin) {
-        // 查询的是 Redis 最新状态快照，不是 event-file-store 的历史 snapshot。
+        // 查询的是 Redis 最新状态快照，不是历史明细库。
         return json(repository.getState(vin));
     }