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Android RetroCache

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This library provide an easy way for configure retrofit with a 2 layer cache (RAM and Disk). To see more details about the cache used visit DualCache

This allow you to improve the data usage of your apps.


  • Ensure you can pull artifacts from JitPack :
repositories {
    maven { url '' }
  • And add to your module gradle file :
android {
    packagingOptions {
        exclude 'META-INF/LICENSE'
        exclude 'META-INF/NOTICE'

dependencies {
    compile 'com.github.iagocanalejas:retrocache:<VERSION>'


  1. In your Service Api Interface change all Call<T> return types for CachedCall<T>

    public interface ApiService {
        Cached<MyObject> getResource();
  2. Build your cache. Library include some shortcuts for this tasks but you can always build a full configured cache using DualCache. Just remember cache key type must be String and entry type must be byte[]

    • Basic cache using only RAM.
       DualCache<String, byte[]> mCache = RetroCache.getRamCache(APP_VERSION);
    • Basic cache using both, Disk and Ram, layers.
       DualCache<String, byte[]> mCache = RetroCache.getDualCache(context, APP_VERSION);
    • Basic cache using both, Disk and Ram, layers and setting a life time for entries.
       DualCache<String, byte[]> mCache = RetroCache.getVolatileCache(context, APP_VERSION);
    • You can also get a non configured Builder.
       Builder<String, byte[]> builder = RetroCache.getBuilder(APP_VERSION);

    For see default values in this caches take a look at RetroCache


    • APP_VERSION is a static integer. When APP_VERSION changes the cache is automatically cleared. It's recommended to use BuildConfig.VERSION_CODE as APP_VERSION
  3. Add the cache to your Retrofit service with one of the following methods.

    retrofitBuilder.addCallAdapterFactory(CachedCallAdapterFactory.create(context, APP_VERSION));
    retrofitBuilder.addCallAdapterFactory(CachedCallAdapterFactory.createWithExecutor(cache, executor));
  4. Use it as normal retrofit. Just remember to use Cached. All retrofit methods are included, and you can also use methods explained in Included section.


In addition to normal retrofit usage you can also call refresh(callback) to avoid looking in the cache or remove() to invalidate a cached call.

Cached<MyObject> call = ...
call.refresh(new Callback<MyObject>() {


RxJava2 adapter is still in beta. You can use it as normal retrofit rxjava2 adapter just add your adapter like:

retrofitBuilder.addCallAdapterFactory(RxJava2CachedCallAdapterFactory.create(context, APP_VERSION));
retrofitBuilder.addCallAdapterFactory(RxJava2CachedCallAdapterFactory.createAsync(context, APP_VERSION));
retrofitBuilder.addCallAdapterFactory(RxJava2CachedCallAdapterFactory.createWithScheduler(cache, scheduler));
retrofitBuilder.addCallAdapterFactory(RxJava2CachedCallAdapterFactory.createWithScheduler(context, APP_VERSION, scheduler));

Don't forget to include dependency:

dependencies {
    compile 'com.github.iagocanalejas:retrocache-rxjava2:<VERSION>'

Pull Requests

I welcome and encourage all pull requests. Here are some basic rules to follow to ensure timely addition of your request:

  1. Match coding style (braces, spacing, etc.) This is best achieved using CMD+Option+L (on Mac) or Ctrl+Alt+L on Windows to reformat code with Android Studio defaults.
  2. Pull Request must pass all tests with gradlew check for styling, and gradlew test for unit tests.
  3. If its a feature, bugfix, or anything please only change code to what you specify.
  4. Please keep PR titles easy to read and descriptive of changes, this will make them easier to merge.
  5. Pull requests must be made against develop branch. Any other branch (unless specified by the maintainers) will get rejected.
  6. Have fun!

Maintained By

IagoCanalejas (@iagocanalejas)

Andy (@ANDYear21)


Copyright 2016 IagoCanalejas.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
See the License for the specific language governing permissions and
limitations under the License.
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