Increase Python cache window (#1144)

* Increase Python cache window

* Update pip.md

* Update IPyPiClient.cs

Author: cobya

docs/detectors/pip.md

@@ -50,7 +50,7 @@ If no internet connection or a component cannot be found in PyPi, said component
 ## Environment Variables
 
 The environment variable `PyPiMaxCacheEntries` is used to control the size of the in-memory LRU cache that caches responses from PyPi.
-The default value is 128.
+The default value is 4096.
 
 The enviroment variable `PIP_INDEX_URL` is used to determine what package feed should be used for `pip install --report` detection.
-The default value will use the PyPi index unless pip defaults have been configured globally.
+The default value will use the PyPi index unless pip defaults have been configured globally.

src/Microsoft.ComponentDetection.Detectors/pip/IPyPiClient.cs

@@ -30,7 +30,7 @@ public interface IPyPiClient
 public sealed class PyPiClient : IPyPiClient, IDisposable
 {
     // Values used for cache creation
-    private const long CACHEINTERVALSECONDS = 60;
+    private const long CACHEINTERVALSECONDS = 180;
 
     private const long DEFAULTCACHEENTRIES = 4096;
 

src/Microsoft.ComponentDetection.Detectors/pip/SimplePypiClient.cs

@@ -18,7 +18,7 @@ namespace Microsoft.ComponentDetection.Detectors.Pip;
 public sealed class SimplePyPiClient : ISimplePyPiClient, IDisposable
 {
     // Values used for cache creation
-    private const long CACHEINTERVALSECONDS = 60;
+    private const long CACHEINTERVALSECONDS = 180;
     private const long DEFAULTCACHEENTRIES = 4096;
 
     // max number of retries allowed, to cap the total delay period