Holly Cummins
where else to find them
website:https://hollycummins.com
github:holly-cummins
bluesky:hollycummins.com
mastodon:@holly_cummins@hachyderm.io
linkedin:holly-k-cummins
devto:holly_cummins
what they talk about
all 16 in the filters
where they keep going back
- GOTO Copenhagen3 editions2022–2025
- Craft Conference3 editions2019–2022
- Øredev2 editions2024–2025
all 20 in the filters
on a stage with
- Trisha Gee3×
- Abby Bangseronce
- Adrian Mouatonce
all 11 in the filters
who talks about the same things
- Emmanuel Bernard30 talks
- Francesco Nigro8 talks
- Roberto Cortez19 talks
- Burr Sutter39 talks
- Saiyam Pathak38 talks
- Jonathan Vila18 talks
| title | conference | date |
|---|---|---|
| Five (and a half) Cool Things You Can Do With Quarkus | Øredev 2025 | 2025-11-05 |
Quarkus shows concrete wins: microbenchmark with Hyperfoil yields 9,000 req/s vs 3,800 req/s on the same laptop and lab runs report ~4–5x advantage, container… | ||
| Things You Thought You Didn’t Need To Care About | GOTO Copenhagen 2025 | 2025-09-29 |
Bayesian math is used to turn word counts into decisions—example: the Ozempic spam example shows a word can be 60% likely spam but a 99% accurate tool can… | ||
| Security & DevEx: Can We Have Both? | GOTO Copenhagen 2025 | 2025-09-29 |
Argument: invest in secure defaults and a composable internal platform API so teams get guarded S3/bucket configurations, vetted base images, and TLS key… | ||
| Things you thought you didn’t need to care about that have a big impact on your job | XConf Europe 2025 | 2025-09-18 |
Describes concrete surprises: a naive Bayes spam example gives ~60% “spamicity” from a single token; a 99%‑accurate static analyzer still yields only ~50%… | ||
| Practical Zombie Hunting for Kubernetes Users | KubeCon + CloudNativeCon Europe 2025 | 2025-04-01 |
Claims that ~25–30% of servers do no useful work and average utilization sits at ~12–18%, costing an estimated $26B in always‑on cloud waste in 2021 and… | ||
| Less waste, more joy, and a lot more green: How Quarkus makes Java better | Øredev 2024 | 2024-11-06 |
Quarkus compiles to native via GraalVM and yields 15 milliseconds start time and roughly half the memory footprint of typical Java apps, while Quarkus-on-JVM… | ||
| The future of development: Are our jobs getting harder or easier? | Voxxed Days Thessaloniki 2024 | 2024-10-18 |
Historical arc from punch cards to AI yields concrete tradeoffs: Quarkus hides boilerplate (convenience logger) but required a manual workaround for a JVM… | ||
| Zero Waste, Radical Magic, and Italian Graft – Quarkus Efficiency Secrets | Devoxx Belgium 2024 | 2024-10-07 |
Quarkus shifts heavy work from runtime to build time, using a Jandex offline index and an extensible build steps/build items model so libraries participate in… | ||
| Productivity is Messing Around and Having Fun | Devoxx Belgium 2024 | 2024-10-07 |
Developer joy links to business results: positive mood yields 31% productivity and a comedy clip gives a 12% boost. Practical fixes: use build caches (Spring… | ||
| Panel: Where Is SW Development Going? | GOTO Copenhagen 2024 | 2024-09-30 |
Industry adoption of agile is now “boringly normal” with many teams doing monthly or on-demand releases and cross-functional ownership; tooling moves include… | ||
| 97 Things Every Java Prog. Should Know | GOTO Copenhagen 2024 | 2024-09-30 |
Practical, specific takeaways: learn IntelliJ shortcuts and integrations—Alt+Enter, live templates, debugger, Git and Gradle support—to stop thinking about… | ||
| The Efficiency Paradox: How to Save Yourself & the World | GOTO Copenhagen 2024 | 2024-09-30 |
Claims concrete wins: automated LightSwitchOps (a school shell script saves $12,000, AWS shutdown automation cuts cloud bills ~30%) and faster code reduce… | ||
| Is efficiency a good thing? | StaffPlus London 2024 | 2024-06-11 |
Claims that chasing efficiency backfires get specific evidence: an 84-step pre-approval turns a 10-minute provisioning into three months, LinkedIn ships… | ||
| Faster, greener, and happier- why Quarkus should be your next tech stack | Voxxed Days Zürich 2024 | 2024-03-07 |
Quarkus claims dramatic wins: JVM startup under one second and 15 ms native startup on GraalVM; memory and throughput improvements that allow 3x denser… | ||
| Why Quarkus Should Be Your Next Tech Stack: Faster, Greener & Happier | GOTO Amsterdam 2023 | 2023-06-13 |
Quarkus claims dramatic runtime and cost wins: JVM startup as low as ~20 ms, GraalVM native builds (about a minute) give very high deployment density and… | ||
| 5 Tricks To Make Your Apps Greener, Cheaper & Nicer | GOTO Aarhus 2023 | 2023-05-22 |
Gives five concrete levers: pick region and time using ElectricityMap (Virginia is notably coal‑heavy), adopt “light‑switch Ops” to stop zombie and… | ||
| Writing Greener Java Applications | Devoxx France 2023 | 2023-04-12 |
Quarkus experiments measure power with RAPL telemetry and convert instance load to carbon using region grids (ElectricityMaps); results show Quarkus on the JVM… | ||
| Redis: From Cache to Time Series! | Devoxx France 2023 | 2023-04-12 |
Shows how Redis can be used as a full-featured database inside Quarkus rather than just a cache, building a hide-and-seek demo. It uses Redis modules and core… | ||
| Avoiding Common Pitfalls With Modern Microservices Testing | Devnexus 2023 | 2023-04-04 |
Microservices tests pass locally but the system still breaks because mocks lie; the session demonstrates a concrete fix using consumer-driven contract testing… | ||
| The Importance of Fun in the Workplace | YOW! Melbourne 2022 | 2022-12-08 |
Research-backed claim: a brain in positive mood is 31% more productive and a short comedy break yields about 12% more productivity. Practical fixes: remove… | ||
| Cloud Chaos & Microservices Mayhem | GOTO Copenhagen 2022 | 2022-10-03 |
Cloud migrations still bite: a 2017 survey finds ~25% “zombie” servers and real bills can spike to $72,000 from a runaway Firebase job; JVM heuristics change… | ||
| Cloud Chaos & Microservices Mayhem | GOTO Amsterdam 2022 | 2022-06-12 |
Cloud and microservices realities: JVMs pick GC heuristics by container size causing long pauses in tiny containers, startup time and memory become direct… | ||
| Why you're missing out if you're not making Quarkus extensions | JNation 2022 | 2022-06-07 |
Quarkus extensions move work to build time so libraries get faster startup, smaller memory and a richer dev experience; this demo builds an extension that… | ||
| Why You Can't Buy Cloud Native | JNation 2022 | 2022-06-07 |
Claims cloud native is about how software is delivered, not the tools you buy, and you cannot “install” cloud nativeness. Shows failures: kubernetes plus… | ||
| Innovation anti-patterns: bonkers beans and magic numbers | Craft Conference 2022 | 2022-06-02 |
Explains that “MVP” is ambiguous and recommends naming intent (experiment, first release, throwaway prototype); shows a real wizard of oz MVP where a web front… | ||
| Nine Ways To Fail at Cloud Native | Craft Conference 2021 | 2021-06-02 |
Argues that common failures are concrete: microservices become a distributed monolith when teams copy‑paste domain models instead of sharing libraries; CI/CD… | ||
| Cloud Chaos and Microservices Mayhem | Jfokus 2021 | 2021-02-09 |
Cloud-era costs and coupling bite: a 2017 survey finds ~25% of 16,000 servers doing no useful work, and forgotten test clusters can rack up bills (anecdotal… | ||
| Cloud Chaos and Microservices Mayhem | jLove 2020 | 2020-12-04 |
Cloud-native Java causes real failures and fixes: forgotten Kubernetes clusters can cost €1,000/month (one demo cluster burned ~€2,000), a 2017 survey found… | ||
| Cloud chaos and microservices mayhem | J-Fall Virtual 2020 | 2020-11-03 |
Cloud habits that were fine ten years ago become costly or fragile: a personal Kubernetes cluster burns about €1,000/month as a zombie, a study of ~16,000… | ||
| Tales from the DevOps Transformation Trenches | DevOps Enterprise Summit London 2019 | 2019-06-25 |
Consultancy engagements show that tools alone don't fix culture: teams rename old roles and still hit slow release gates like a release board that meets twice… | ||
| Quantum computing | Craft Conference 2019 | 2019-05-07 |
Explains why some problems explode exponentially — simulating caffeine needs about 10^48 bits (roughly 1–10% of Earth’s mass if using one bit per atom) — and… | ||
| The Importance of Fun in the Workplace | Voxxed Days Milano 2019 | 2019-04-13 |
Argues that fun boosts productivity with cited numbers — 31% productivity when mood is positive and 12% gain after a comedy break — and shows concrete… | ||
| Microservices: From dream to reality in forty five minutes | Jfokus 2016 | 2016-02-08 |
A polyglot cat app is built on Raspberry Pis and on Bluemix to show microservices actually running: Liberty containers, Cloud Foundry, JAX-RS for JSON… | ||
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