Remove MicrometerTracingAdapter in favor of Lettuce's Micrometer support.

Closes #3093

Author: mp911de

src/main/antora/modules/ROOT/pages/observability.adoc

@@ -2,7 +2,7 @@
 = Observability
 
 Getting insights from an application component about its operations, timing and relation to application code is crucial to understand latency.
-Spring Data Redis ships with a Micrometer integration through the Lettuce driver to collect observations during Redis interaction.
+Lettuce ships with a Micrometer integration to collect observations during Redis interaction.
 Once the integration is set up, Micrometer will create meters and spans (for distributed tracing) for each Redis command.
 
 To enable the integration, apply the following configuration to `LettuceClientConfiguration`:
@@ -16,7 +16,7 @@ class ObservabilityConfiguration {
   public ClientResources clientResources(ObservationRegistry observationRegistry) {
 
     return ClientResources.builder()
-              .tracing(new MicrometerTracingAdapter(observationRegistry, "my-redis-cache"))
+              .tracing(new MicrometerTracing(observationRegistry, "my-redis-cache"))
               .build();
   }
 
@@ -31,77 +31,7 @@ class ObservabilityConfiguration {
 }
 ----
 
-See also https://opentelemetry.io/docs/reference/specification/trace/semantic_conventions/database/#redis[OpenTelemetry Semantic Conventions] for further reference.
+See also for further reference:
+* https://redis.github.io/lettuce/advanced-usage/#micrometer[Lettuce Tracing]
+* https://opentelemetry.io/docs/reference/specification/trace/semantic_conventions/database/#redis[OpenTelemetry Semantic Conventions] .
 
-[[observability-metrics]]
-== Observability - Metrics
-
-Below you can find a list of all metrics declared by this project.
-
-[[observability-metrics-redis-command-observation]]
-== Redis Command Observation
-
-____
-Timer created around a Redis command execution.
-____
-
-**Metric name** `spring.data.redis`. **Type** `timer` and **base unit** `seconds`.
-
-Fully qualified name of the enclosing class `org.springframework.data.redis.connection.lettuce.observability.RedisObservation`.
-
-
-
-.Low cardinality Keys
-[cols="a,a"]
-|===
-|Name | Description
-|`db.operation`|Redis command value.
-|`db.redis.database_index`|Redis database index.
-|`db.system`|Database system.
-|`db.user`|Redis user.
-|`net.peer.name`|Name of the database host.
-|`net.peer.port`|Logical remote port number.
-|`net.sock.peer.addr`|Mongo peer address.
-|`net.sock.peer.port`|Mongo peer port.
-|`net.transport`|Network transport.
-|===
-
-.High cardinality Keys
-[cols="a,a"]
-|===
-|Name | Description
-|`db.statement`|Redis statement.
-|`spring.data.redis.command.error`|Redis error response.
-|===
-
-[[observability-spans]]
-== Observability - Spans
-
-Below you can find a list of all spans declared by this project.
-
-[[observability-spans-redis-command-observation]]
-== Redis Command Observation Span
-
-> Timer created around a Redis command execution.
-
-**Span name** `spring.data.redis`.
-
-Fully qualified name of the enclosing class `org.springframework.data.redis.connection.lettuce.observability.RedisObservation`.
-
-
-
-.Tag Keys
-|===
-|Name | Description
-|`db.operation`|Redis command value.
-|`db.redis.database_index`|Redis database index.
-|`db.statement`|Redis statement.
-|`db.system`|Database system.
-|`db.user`|Redis user.
-|`net.peer.name`|Name of the database host.
-|`net.peer.port`|Logical remote port number.
-|`net.sock.peer.addr`|Mongo peer address.
-|`net.sock.peer.port`|Mongo peer port.
-|`net.transport`|Network transport.
-|`spring.data.redis.command.error`|Redis error response.
-|===