Ben Weiss
@keyboardsurfer.dev
App Performance Developer Relations Engineer for Android
At droidcon London @ajeshr.bsky.social and I presented on "low effort, high impact app performance". We explored how you can improve app performance and then measure these improvements. youtu.be/t7djyOWymJQ?...
Low effort, High impact Android performance wins - Ben Weiss & Ajesh Pai | droidcon London 2025
YouTube video by droidcon & fluttercon
youtu.be
November 26, 2025 at 7:22 PM
At droidcon London @ajeshr.bsky.social and I presented on "low effort, high impact app performance". We explored how you can improve app performance and then measure these improvements. youtu.be/t7djyOWymJQ?...
Performance Spotlight Week is done and dusted. Check out everything we talked about in the closing blog post. android-developers.googleblog.com/2025/11/full...
Fully Optimized: Wrapping up Performance Spotlight Week
News and insights on the Android platform, developer tools, and events.
android-developers.googleblog.com
November 21, 2025 at 6:22 PM
Performance Spotlight Week is done and dusted. Check out everything we talked about in the closing blog post. android-developers.googleblog.com/2025/11/full...
We're hosting a live Ask Android session to cap off Performance Spotlight Week at 6PM CET / 9AM PT today. Tune in and bring your questions. www.youtube.com/watch?v=RMnZ...
App Performance #AskAndroid | Spotlight Week
YouTube video by Android Developers
www.youtube.com
November 21, 2025 at 4:05 PM
We're hosting a live Ask Android session to cap off Performance Spotlight Week at 6PM CET / 9AM PT today. Tune in and bring your questions. www.youtube.com/watch?v=RMnZ...
During Google I/O 2025 we also talked about low effort and high impact app performance improvements. And now you can watch the recording.
App performance improvements
YouTube video by Android Developers
www.youtube.com
November 20, 2025 at 8:38 PM
During Google I/O 2025 we also talked about low effort and high impact app performance improvements. And now you can watch the recording.
Tomorrow 9AM PT we're going to answer your #AskAndroid questions on app performance. Quick think of something and ask right now! I won't answer before the session though.
www.youtube.com/watch?v=RMnZ...
www.youtube.com/watch?v=RMnZ...
App Performance #AskAndroid | Spotlight Week
YouTube video by Android Developers
www.youtube.com
November 20, 2025 at 3:07 PM
Tomorrow 9AM PT we're going to answer your #AskAndroid questions on app performance. Quick think of something and ask right now! I won't answer before the session though.
www.youtube.com/watch?v=RMnZ...
www.youtube.com/watch?v=RMnZ...
Don't ignore this tip! We've switched to using the optimized proguard file & shrinking resources in our latest release and have seen a massive drop in all performance related metrics, with slow app launch metrics dropping >30%. All from a 5 minute code change!
Run this and let me know the output:
`grep "dontoptimize" app/build/outputs/mapping/release/configuration.txt`
In case it's not empty, you definitely should watch this youtu.be/QqO2jZ-NZko?...
`grep "dontoptimize" app/build/outputs/mapping/release/configuration.txt`
In case it's not empty, you definitely should watch this youtu.be/QqO2jZ-NZko?...
November 20, 2025 at 2:57 PM
Run this and let me know the output:
`grep "dontoptimize" app/build/outputs/mapping/release/configuration.txt`
In case it's not empty, you definitely should watch this youtu.be/QqO2jZ-NZko?...
`grep "dontoptimize" app/build/outputs/mapping/release/configuration.txt`
In case it's not empty, you definitely should watch this youtu.be/QqO2jZ-NZko?...
Boost Android app performance with the R8 optimizer | Spotlight Week
YouTube video by Android Developers
youtu.be
November 20, 2025 at 10:31 AM
Run this and let me know the output:
`grep "dontoptimize" app/build/outputs/mapping/release/configuration.txt`
In case it's not empty, you definitely should watch this youtu.be/QqO2jZ-NZko?...
`grep "dontoptimize" app/build/outputs/mapping/release/configuration.txt`
In case it's not empty, you definitely should watch this youtu.be/QqO2jZ-NZko?...
Customizing the cache window lets you prefetch content on Jetpack Compose LazyLayouts. Combining it with pausable composition and text prefetching is a winning combination.
Deeper Performance Considerations
News and insights on the Android platform, developer tools, and events.
android-developers.googleblog.com
November 20, 2025 at 10:26 AM
Customizing the cache window lets you prefetch content on Jetpack Compose LazyLayouts. Combining it with pausable composition and text prefetching is a winning combination.
Let's talk you through R8 Keep Rules, take the edge off and give your app the performance boost it deserves. android-developers.googleblog.com/2025/11/conf...
Configure and troubleshoot R8 Keep Rules
News and insights on the Android platform, developer tools, and events.
android-developers.googleblog.com
November 19, 2025 at 5:22 PM
Let's talk you through R8 Keep Rules, take the edge off and give your app the performance boost it deserves. android-developers.googleblog.com/2025/11/conf...
There's more to g-R8 performance. Profile Guided Optimizations, Jetpack Compose 1.10 and background work considerations are on the menu of today's read.
android-developers.googleblog.com/2025/11/deep...
android-developers.googleblog.com/2025/11/deep...
Deeper Performance Considerations
News and insights on the Android platform, developer tools, and events.
android-developers.googleblog.com
November 19, 2025 at 5:20 PM
There's more to g-R8 performance. Profile Guided Optimizations, Jetpack Compose 1.10 and background work considerations are on the menu of today's read.
android-developers.googleblog.com/2025/11/deep...
android-developers.googleblog.com/2025/11/deep...
So you enabled R8. Now is a good time to catch up on Keep Rules. @ajeshr.bsky.social talks you through configuration and troubleshooting.
www.youtube.com/watch?v=A0I6...
www.youtube.com/watch?v=A0I6...
How to debug and troubleshoot R8 optimizer | Spotlight Week
YouTube video by Android Developers
www.youtube.com
November 18, 2025 at 8:39 PM
So you enabled R8. Now is a good time to catch up on Keep Rules. @ajeshr.bsky.social talks you through configuration and troubleshooting.
www.youtube.com/watch?v=A0I6...
www.youtube.com/watch?v=A0I6...
Share this post with your stakeholders. I'm convinced they want to invest in performance after reading it. android-developers.googleblog.com/2025/11/how-...
How Reddit used the R8 optimizer for high impact performance improvements
News and insights on the Android platform, developer tools, and events.
android-developers.googleblog.com
November 18, 2025 at 8:39 AM
Share this post with your stakeholders. I'm convinced they want to invest in performance after reading it. android-developers.googleblog.com/2025/11/how-...
This Friday we'll host a live session on App Performance. Bring your questions using #AskAndroid or #performanceEnabled. See you there www.youtube.com/watch?v=RMnZ...
App Performance #AskAndroid | Spotlight Week
YouTube video by Android Developers
www.youtube.com
November 18, 2025 at 8:17 AM
This Friday we'll host a live session on App Performance. Bring your questions using #AskAndroid or #performanceEnabled. See you there www.youtube.com/watch?v=RMnZ...
The single biggest performance impact for the Reddit app came from enabling the R8 optimizer's full potential.
android-developers.googleblog.com/2025/11/how-...
android-developers.googleblog.com/2025/11/how-...
How Reddit used the R8 optimizer for high impact performance improvements
News and insights on the Android platform, developer tools, and events.
android-developers.googleblog.com
November 17, 2025 at 7:58 PM
The single biggest performance impact for the Reddit app came from enabling the R8 optimizer's full potential.
android-developers.googleblog.com/2025/11/how-...
android-developers.googleblog.com/2025/11/how-...
We're just starting a Spotlight Week on Performance. So get yourselves ready for some g-R8 content.
Get your app on the fast track with Android Performance Spotlight Week!
News and insights on the Android platform, developer tools, and events.
android-developers.googleblog.com
November 17, 2025 at 5:10 PM
We're just starting a Spotlight Week on Performance. So get yourselves ready for some g-R8 content.
droidcon London is around the corner. This time Ajesh Pai and I will share how you can make low effort and high impact app performance improvements to your app and how that helps drive user satisfaction and business results.
Looking forward to seeing you there.
Looking forward to seeing you there.
October 21, 2025 at 6:08 PM
droidcon London is around the corner. This time Ajesh Pai and I will share how you can make low effort and high impact app performance improvements to your app and how that helps drive user satisfaction and business results.
Looking forward to seeing you there.
Looking forward to seeing you there.
Ever wondered how much app performance really matters? 🤔 Duolingo's latest case study shows it's a game-changer! They boosted their Daily Active Users by hundreds of thousands just by speeding up their Android app. 🚀
blog.duolingo.com/android-app-...
blog.duolingo.com/android-app-...
Duolingo's Android performance case study and DAU growth
How we boosted Android app performance and gained hundreds of thousands of daily active users
blog.duolingo.com
July 29, 2025 at 7:24 AM
Ever wondered how much app performance really matters? 🤔 Duolingo's latest case study shows it's a game-changer! They boosted their Daily Active Users by hundreds of thousands just by speeding up their Android app. 🚀
blog.duolingo.com/android-app-...
blog.duolingo.com/android-app-...
Reposted by Ben Weiss
There are a lot of amazing KMP talks coming out right now but here is our talk from I/O!
Dustin and I give an update on our latest KMP releases and then explain the build setup for an Android KMP app.
youtu.be/gP5Y-ct6QXI?...
Dustin and I give an update on our latest KMP releases and then explain the build setup for an Android KMP app.
youtu.be/gP5Y-ct6QXI?...
Demystify KMP builds and structure
YouTube video by Android Developers
youtu.be
May 23, 2025 at 5:41 PM
There are a lot of amazing KMP talks coming out right now but here is our talk from I/O!
Dustin and I give an update on our latest KMP releases and then explain the build setup for an Android KMP app.
youtu.be/gP5Y-ct6QXI?...
Dustin and I give an update on our latest KMP releases and then explain the build setup for an Android KMP app.
youtu.be/gP5Y-ct6QXI?...
Reposted by Ben Weiss
Our #IO25 talk on how to build more accessible apps with Compose is out! 🥳 Lots of tips on choosing appropriate semantics, merging, clearing & hiding, inspection & debug, accessibility checks in tests 🫶
Check it out ☺️
www.youtube.com/watch?v=80qk...
Check it out ☺️
www.youtube.com/watch?v=80qk...
Build more accessible UIs with Jetpack Compose
YouTube video by Android Developers
www.youtube.com
May 23, 2025 at 8:46 AM
Our #IO25 talk on how to build more accessible apps with Compose is out! 🥳 Lots of tips on choosing appropriate semantics, merging, clearing & hiding, inspection & debug, accessibility checks in tests 🫶
Check it out ☺️
www.youtube.com/watch?v=80qk...
Check it out ☺️
www.youtube.com/watch?v=80qk...
Don't use Gson on Android. Use Kotlin Serialization instead. It relies on code generation instead of reflection. This helps avoid optimization related crashes and faster app performance.
github.com/google/gson?...
github.com/Kotlin/kotli...
github.com/google/gson?...
github.com/Kotlin/kotli...
May 15, 2025 at 5:04 PM
Don't use Gson on Android. Use Kotlin Serialization instead. It relies on code generation instead of reflection. This helps avoid optimization related crashes and faster app performance.
github.com/google/gson?...
github.com/Kotlin/kotli...
github.com/google/gson?...
github.com/Kotlin/kotli...
Awesome conversation about Android App Performance in the new Android Build Time podcast: www.youtube.com/watch?v=8zgN...
Enhancing app performance in Android | Android Build Time
YouTube video by Android Developers
www.youtube.com
April 4, 2025 at 10:46 AM
Awesome conversation about Android App Performance in the new Android Build Time podcast: www.youtube.com/watch?v=8zgN...
✨ We're hiring Developer Relations Engineers for Android! ✨
If you're based in Bangalore and can see yourself working with me on Performance or being a part of the incredible Compose team, message me or apply directly.
www.google.com/about/career...
If you're based in Bangalore and can see yourself working with me on Performance or being a part of the incredible Compose team, message me or apply directly.
www.google.com/about/career...
Developer Relations Engineer, Android — Google Careers
www.google.com
March 12, 2025 at 7:49 AM
✨ We're hiring Developer Relations Engineers for Android! ✨
If you're based in Bangalore and can see yourself working with me on Performance or being a part of the incredible Compose team, message me or apply directly.
www.google.com/about/career...
If you're based in Bangalore and can see yourself working with me on Performance or being a part of the incredible Compose team, message me or apply directly.
www.google.com/about/career...