John Feminella
where else to find them
what they talk about
all 11 in the filters
where they keep going back
- !!Con2 editions2018–2021
all 10 in the filters
on a stage with
never shared a talk
who talks about the same things
- Daniel Azuma9 talks
- Craig Buchek11 talks
- Ariel Caplan9 talks
- Jason R. Clark23 talks
- PJ Hagerty26 talks
- Ernie Miller18 talks
| title | conference | date |
|---|---|---|
| tzdata: Back to the Future! | !!Con 2021 | 2021-05-15 |
A single line in tzdata ties modern clocks to a historical legal change and every system that schedules or logs depends on it being right. The dataset contains… | ||
| Scalable Observability for Rails Applications | RailsConf 2019 | 2019-05-01 |
Gives a concrete approach: define SLI/SLO for the business work (demand, satisfaction, efficiency, capacity), instrument with metrics + logs + tracing, and use… | ||
| Relativistic Software Calendars: It’s About Time! | !!Con 2018 | 2018-05-12 |
Claim: keeping clocks in sync becomes literally impossible once systems accelerate away from Earth because simultaneity and elapsed time change with velocity… | ||
| Building with Blockchains in Ruby | RubyConf AU 2018 | 2018-03-08 |
Blockchains are a new kind of data structure offering an intriguing property: immutability through cryptography. We’ll use Ruby to explore the intriguing… | ||
| Building with Blockchains: Better Distributed Applications | JSConf Iceland 2018 | 2018-03-01 |
Blockchains are a new kind of data structure with many interesting applications, and are perhaps most notable for their use in cryptocurrencies like Bitcoin… | ||
| Your Attention, Please: Optimizing Metrics for Humans | SpringOne Platform 2017 | 2017-12-04 |
Argues that monitoring must optimize for human attention by measuring a system’s demand/output/efficiency/capacity rather than raw CPU/memory/disk; replaces… | ||
| Steal This Talk: The Best Features Ruby Doesn't Have (Yet) | RubyConf 2017 | 2017-11-15 |
Claims that Ruby can borrow concrete features — Elm-style error messages that print the salient values, pattern matching, tripartite conditions for repairable… | ||
| A Matter of Time | Open Source Bridge 2015 | 2015-06-23 |
Every so often a minute lasts 61-second minute and that breaks naive code; libraries and examples show concrete failures: Python small-int caching (only -5 to… | ||
| on Picking the Right Analytics Metrics | Velocity Santa Clara 2015 | 2015-05-27 |
Argues that a good performance metric meets four concrete criteria and offers how to apply them: simple, reproducible, credible, actionable is the proposed… | ||
| Why We Can't Have Nice Things: FLoats, Dates, and Names | GoGaRuCo 2014 | 2014-09-19 |
Three hard problems: times, floats, and names. Ruby code shows NaN is not equal to itself and TZ-aware conversions need IANA tzdata and tzinfo to handle… | ||
| Why We Can't Have Nice Things: Unicode, Dates, and Names | Cascadia Ruby 2014 | 2014-08-11 |
Concrete Ruby gotchas and fixes, not philosophy: shows Noël combining diacritic breaking length/reverse, demonstrates timezone pitfalls like 1:30am Nov 2 2014… | ||
| nothing matches | ||