From c661b29b8e6e48709d2992333f49fea8da32849c Mon Sep 17 00:00:00 2001
From: Jadon Fowler <jadonflower@gmail.com>
Date: Tue, 17 Jul 2018 09:47:05 -0700
Subject: [PATCH] Add cache to Travis

Signed-off-by: Jadon Fowler <jadonflower@gmail.com>
---
 .travis.yml | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index e545f0d3a..f2e177297 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,5 +10,16 @@ jdk:
 scala:
   - 2.12.6
 
+# Caching taken from https://www.scala-sbt.org/1.0/docs/Travis-CI-with-sbt.html#Caching
+cache:
+  directories:
+    - $HOME/.ivy2/cache
+    - $HOME/.sbt
+
+before_cache:
+  # Cleanup the cached directories to avoid unnecessary cache updates
+  - find $HOME/.ivy2/cache -name "ivydata-*.properties" -print -delete
+  - find $HOME/.sbt        -name "*.lock"               -print -delete
+
 script:
   - sbt ++$TRAVIS_SCALA_VERSION compile