kinow commented on a change in pull request #38:
URL: https://github.com/apache/commons-cli/pull/38#discussion_r430142726



##########
File path: .travis.yml
##########
@@ -14,15 +14,19 @@
 # limitations under the License.
 
 language: java
-
-jdk:
-  - openjdk8
-  - openjdk11
-  - openjdk12
-  - openjdk13
-  - openjdk14  
-  - openjdk-ea
-
+cache:
+  directories:
+    - $HOME/.m2

Review comment:
       Oh, that sounds smart! I'm using something similar with GH actions but 
for JS and Ruby (caching `yarn.lock` and `Gemfile.lock`). And this little trick 
has sped up significantly my builds. :rocket: 

##########
File path: .travis.yml
##########
@@ -14,15 +14,19 @@
 # limitations under the License.
 
 language: java
-
-jdk:
-  - openjdk8
-  - openjdk11
-  - openjdk12
-  - openjdk13
-  - openjdk14  
-  - openjdk-ea
-
+cache:
+  directories:
+    - $HOME/.m2

Review comment:
       Oh, that sounds like a great idea! I'm using something similar with GH 
actions but for JS and Ruby (caching `yarn.lock` and `Gemfile.lock`). And this 
little trick has sped up significantly my builds. :rocket: 




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