Salmanap/docs v1 push (#92)

* updated model serving, updated the config references, architecture docs and added the llm_provider section

* several documentation changes to improve sections like life_of_a_request, model serving subsystem

---------

Co-authored-by: Salman Paracha <salmanparacha@MacBook-Pro-261.local>

docs/source/observability/access_logs.rst

@@ -0,0 +1,23 @@
+.. _arch_access_logging:
+
+Access Logging
+==============
+
+Access logging in Arch refers to the logging of detailed information about each request and response that flows through Arch. 
+It provides visibility into the traffic passing through Arch, which is crucial for monitoring, debugging, and analyzing the 
+behavior of AI applications and their interactions.
+
+Key Features of Access Logging in Arch:
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+* **Per-Request Logging**: 
+  Each request that passes through Arch is logged. This includes important metadata such as HTTP method, 
+  path, response status code, request duration, upstream host, and more. 
+* **Integration with Monitoring Tools**: 
+  Access logs can be exported to centralized logging systems (e.g., ELK stack or Fluentd) or used to feed monitoring and alerting systems.
+* **Structured Logging**: where each request is logged as a object, making it easier to parse and analyze using tools like Elasticsearch and Kibana.
+
+.. code-block:: yaml
+
+    [2024-09-27T14:52:01.123Z] "ARCH REQUEST" GET /path/to/resource HTTP/1.1 200 512 1024 56 upstream_service.com D
+    X-Arch-Upstream-Service-Time: 25
+    X-Arch-Attempt-Count: 1

docs/source/observability/observability.rst

@@ -7,4 +7,5 @@ Observability
   :maxdepth: 2
 
   tracing
-  stats
+  stats
+  access_logs

docs/source/observability/stats.rst

@@ -1,3 +1,5 @@
+.. _monitoring:
+
 Monitoring
 ==========