

# Event Details

- **Event Name**: GoCracow #17 - designing error codes,  TSDB in Go, PGO
- **Event Start and End Date**: Mon, 19 Jan, 2026 at 05:30 pm – Mon, 19 Jan, 2026 at 08:30 pm
- **Event Description**: More info: https://www.meetup.com/gocracow/events/312312914About this EventAnnouncing next GoCracow meetup! We're thrilled to have Splunk a Cisco company as our host!The meetup is going to take place in the new Splunk Kraków Office which is located in High 5ive FOUR, 2nd floor (Pawia 21, Kraków). We recommend entering the building from the northern entrance. Someone with Cisco badge should help you entering the office.Agenda?: 05:30 PM - 06:00 PMRegistration and socializingInfo: Register yourself at the office’s reception. Please do not come at the last moment.?: 06:00 PM - 06:30 PMDesigning Error Codes That Don’t SuckHost: Marek ČermákInfo: Most APIs end up with a graveyard of ad-hoc error messages and random HTTP status codes. This talk shows how to model domain errors explicitly—making business rules like “insufficient funds” or “portfolio not found” first-class concepts—and then map them cleanly into HTTP responses. We’ll cover patterns for error types, codes, and payloads, how to keep domain logic free from transport details, and how a good error design makes debugging, observability, and client integrations dramatically less painful.?: 06:30 PM - 07:00 PMSnacks break?: 07:00 PM - 07:30 PMWriting a TSDB from Scratch: Performance OptimizationHost: Roman KhavronenkoInfo: Time series data generated by monitoring systems is usually measured in millions of samples per second. To keep up with the load, TimeSeries database needs to be as efficient with resources as possible. The talk will review performance optimizations we learned while writing a TSDB from scratch.?: 07:30 PM - 07:45 PMSnacks break?: 07:45 PM - 08:15 PMNudging the Go Compiler with PGOHost: Matúš BafrnecInfo: The Go compiler is incredibly smart, but it usually operates in the dark - optimizing code without knowing how it actually runs in the real world. In this talk, we will explore how to "nudge" the compiler to its best using production profiles, guiding it to make better optimization decisions that yield "free" performance improvements.?: 08:15 PM - 08:30 PMSnacks break?: 08:30 PM - 09:00 PMLightning talksInfo: Max 5 min per lightning talk + Q&amp;A.
- **Event URL**: https://allevents.in/krak%C3%B3w/gocracow-17-designing-error-codes-tsdb-in-go-pgo/100001977020877665
- **Event Categories**: meetups, workshops
- **Interested Audience**: 
  - total_interested_count: 0

## Ticket Details

- **Ticket URL**: https://consumer.pxf.io/c/1339408/3151484/39691?partnerpropertyid=1191892&MediaPartnerPropertyId=1191892&svlink=14105511&level=1&u=https%3A%2F%2Fwww.eventbrite.com%2Fe%2Fgocracow-17-designing-error-codes-tsdb-in-go-pgo-tickets-1977020877665
- **Ticket Price Range**: min: 0, max: 0, currency: USD

## Event venue details

- **city**: Kraków
- **state**: MA
- **country**: Poland
- **location**: Pawia 21
- **lat**: 50.0721366
- **long**: 19.9456714
- **full address**: Pawia 21, 21 Pawia, Kraków, Poland

## Event Organizer details

- **affiliate_id**: 10
- **organizer**: GoCracow (https://allevents.in/org/gocracow/26822998)

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  - **Image URL**: https://cdn-az.allevents.in/events3/banners/2e8985b948b8d5b984c86a0a852f5d81c9bce3698a874ae23c4b778218339559-rimg-w400-h400-dca9c3d4-gmir.jpg?v=1766312414

## FAQs

- **Q**: When is the event happening?
  - **A:** Mon, 19 Jan, 2026 at 05:30 pm
- **Q**: Where is the event happening?
  - **A:** Pawia 21, 21 Pawia, Kraków, Poland
- **Q**: What is the ticket price?
  - **A:** starting from 0 up to 0 USD
- **Q**: Who is organizing the event?
  - **A:** GoCracow
- **Q**: What type of event is this?
  - **A:** meetups, workshops
- **Q**: Where can I find ticket details about GoCracow #17 - designing error codes,  TSDB in Go, PGO ?
  - **A:** You can find ticket details about this event on AllEvents.

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