who decided to call it firecracker-containerd and not crackernetes?
Posts by Lili Cosic
DataFusion 53.0.0 is released: datafusion.apache.org/blog/output/...
๐ Introducing the Polar Signals VS Code extension! See CPU time, memory allocations, and more as inline annotations, right next to your code.
Works with Polar Signals Cloud and self-hosted Parca.
www.polarsignals.com/blog/posts/2...
Here is a new blog about Parquet Variant, including use case, and shredding examples
parquet.apache.org/blog/2026/02...
On the flip side: my laptop is louder and disk is not as happy.
After a few years focusing on cloud platforms, Iโve moved back to core database engineering in January!
I wanted to move to our InfluxDB 3 team because I missed working on DBs. Itโs been an intense start to 2026, but the team gave me a warm welcome and I was able to start contributing quickly. ๐ฆ
TIL: notary in Germany reads out the entire contract before you sign it.
It sounds like my personal hell: sitting still for 2 hours while someone reads out loud a contract in German, and then you pay them for the privilege. ๐ซ
Benito is a threat b/c he makes art so alluring and enjoyable you want to understand everything about it and then you end up learning about sugar and slavery and colonialism and the Taรญnos and Hawaii and then you probably have some thoughts of your own, and that's why art is powerful and dangerous
๐ญ they are lucky to have you!
Polar Signals at #FOSDEM 2026 day 2!
Both talks in the Rust room.
Profiling Rust applications with Parca
Brennan at 12:30 @ UB2.252A (Rust)
fosdem.org/2026/schedul...
Frederic at 16:00 @ UB2.252A (Rust)
Random seeds and state machines: An approach to DST in Rust
fosdem.org/2026/schedul...
Polar Signals at #FOSDEM 2026 day 1!
Tommy at 12:30 @ H.1308 (eBPF)
OOMProf: Profiling Go heap memory at OOM time
fosdem.org/2026/schedul...
Thor at 17:25 @ UB2.252A (Databases)
From Disks to Distributed: Our Journey of Database Evolution in the Cloud
fosdem.org/2026/schedul...
Haha never!
Sounds like a cool #fosdem! (Sure I am the first one to make that joke. ๐ซ )
Very excited for this year's #FOSDEM! Lots of talks by Polar Signals folks:
You will do amazing, and they are lucky to have you! And you will be missed at influx!
1/5 โก๏ธ Why Rust Will Help You Deliver Better Low-latency Systems and Happier Developers with Andrew Lamb
bit.ly/47kgmwU
@andrewlamb1111.bsky.social
#RustLang #LowLatency
Grown up so much since last year! ๐
The hard things in computing:
* cache eviction
* naming things
* figuring out which of your paying customers is DOSing your service
Super exciting to see two speakers from InfluxData here! ๐
The irony of shortening my Balkan name to "Lili" for the convenience of others, only to have people spell it "Lilli." ๐ซ
I was laid off last week. I'm excited to start a new chapter where I can put my knowledge and dedication to work. I believe every chapter closes to make room for something more rewarding. I'm keen to discover the next opportunity. Learn more: www.linkedin.com/pos... #OpenToWork
I've posted my latest recap of the world of databases: www.cs.cmu.edu/~pavlo/blog/...
All the hot topics from the last year:
โข More Postgres action!
โข MCP for everyone!
โข MongoDB gets litigious with FerretDB!
โข File formats!
โข Market movements!
โข The richest person in the history of the world!
Its a hotel near Bologna. maps.app.goo.gl/mp2CYRTBiFRY...
My favourite food itsm was the tortellini in broth.
I make it a point to be anywhere but Berlin on December 31st (IYKYK)!
This year it was Bologna, amazing food, charming streets and celebrations among Italians for new year is so unique!
Last couple of sunsets of 2025.
We cut cross-zone traffic for SLO monitoring by 90% using Prometheus subquery optimization.
The trick: pre-aggregate data locally instead of shuffling 55M raw samples to Thanos queriers.
Coming soon to Pyrra! ๐
www.polarsignals.com/blog/posts/2...