Member of the @elixirlang core team, speaker, writer. he/him.
L'Aquila, Italy
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- Following 361
- Followers 7,117
- Likes 1,705
Truly one of the most fun techs I've worked with 🌊
.@knocklabs cut its data streaming costs by 77% (from ~$112K to ~$25K/year) by migrating off Amazon Kinesis to @warpstream_labs.
One engineer (@whatyouhide), 1 month, 5 topics, ~20 consumers. Zero downtime.
Full engineering write-up.
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I put out a GenStage visual explainer a few weeks ago. Only natural follow up is a visual explainer for @elixirlang's Broadway (elixir-broadway.org/). 🛝
andrealeopardi.com/posts/bro…
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I just released a new version of broadway_kafka (for @elixirlang), adding support for static membership.
That was a blocker for us at @knocklabs for using this: without this, a k8s rolling deploy causes LONG consumption pauses = no bueno.
Give it a try 🙃
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I just released Xandra v0.20 (@elixirlang driver for @cassandra/@ScyllaDB), which includes SO MANY goodies: token-aware routing, schema agreement, ScyllaDB shard-awareness, and more. Hoping you all will try it out and report issues 😌
hex.pm/packages/xandra
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I published a little post about @elixirlang GenStage demand: andrealeopardi.com/posts/gen…
It has interactive charts which I totally build line-by-line by hand without any AI. Nah but I’m still really happy to finally be able to put a "visual" explainer like this out there! 🎆
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I don't chime in much but this is True™ in my experience too. Sometimes it's blatant and sometimes subtle but I stopped using it because it requires much more scrutiny from me now
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I've been heads down into a migration to @warpstream_labs for the past few weeks at @knocklabs. One of the most delightful techs I've worked with. Super excited to share more about it in a bit.
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Stealing a banger quote from our CTO @cjbell_: I’m object-storage-pilled
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Either I’m doing something wrong, or the type of work I do is so far from this experience. Sure, heavy agentic usage, but nothing remotely close to the luxury of "just smashing Enter"
After working for a month with 20+ concurrent Fables all day, I've realized my job only has a few components to it anymore:
- asking for what I want
- setting up accounts and credentials
- taste-making choices presented to me
- communication with team and customers
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I just shipped Redis Cluster support in Redix (@elixirlang's driver). I have not written any code—it's all agents.
I'm ready to get pushback, but it was a great experiment 🫳
I wrote about the whole experience, too: andrealeopardi.com/posts/red…
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New version of nimble_lz4 for @elixirlang is out with support for stream encoding/decoding. This is neat and enables production-grade support for many use cases—Kafka, ClickHouse, Cassandra, and more—where all-in-memory is not feasible.
github.com/whatyouhide/nimbl…
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Just pushed a big release for the Protobuf @elixirlang library:
hex.pm/packages/protobuf
textproto support, tons of bug fixes, lots of little paper cuts that are no more. Please try it out and let us know if anything's off. 🙃
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Wrote about counters and atomics in Erlang/@elixirlang:
andrealeopardi.com/posts/erl…
There's a chart in there too 📈
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This is what I've been working on for the past ~1 year. All in @elixirlang, mostly powered by the workhorse that is @ClickHouseDB. Big undertaking but one of the most fun things I've ever worked on 🎫
User segmentation is now generally available in Knock.
While this feature is common across customer engagement solutions, we built Knock's version to go further than most. Here's how 👇
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Slides for my talk "Agentic Elixir" at @ElixirConfEU 🛝
speakerdeck.com/whatyouhide/…
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I’m teaching a training here and doing a talk. I’m excited! Hope to see ya there.
Just one week left until ElixirConf EU 2026. Join virtually or come to Málaga to ask @chris_mccord about DurableServer in person!
Grab your tickets before April 16th to lock in the lower rate before Last Minute pricing kicks in: eventbrite.co.uk/e/elixircon…
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Just published a blog post about how we (@knocklabs) use @ClickHouseDB to periodically dump info about our most resource-intensive BEAM processes. Already 100s of millions of rows, sub-10ms queries.
andrealeopardi.com/posts/bea…
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I just released a lil @elixirlang library for generating docs about telemetry events from structured data. Love me some telemetry events but they're often an underdocumented aspect of libraries.
hex.pm/packages/telemetry_do…
Feedback welcome 👐
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