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UID:pretalx-devconf-cz-2026-JAM8MF@pretalx.devconf.info
DTSTART;TZID=CET:20260618T161500
DTEND;TZID=CET:20260618T165000
DESCRIPTION:Your application feels instant on localhost but slows down in p
 roduction. This common gap between development and real environments is a 
 major\, often misunderstood source of performance issues. This talk explai
 ns why “fast locally” becomes “slow in production\,” showcasing po
 st-deployment factors like caching behaviour\, HTTP headers\, CDN interact
 ions\, runtime differences\, and missing observability.\n\nAttendees will 
 walk away with clear insights into:\n• How caching layers\, headers\, an
 d CDNs are misunderstood and misconfigured\n• Key differences between lo
 cal environments and production runtimes\n• Why latency issues stay invi
 sible without observability\n• How small configuration choices create ou
 tsized performance impact\n• Thinking production-first from day one\n\nU
 sing concrete examples from real systems\, the talk will demonstrate how t
 o think about end-to-end latency\, validate assumptions with data\, and de
 sign applications that behave predictably at scale and under production tr
 affic.
DTSTAMP:20260430T124927Z
LOCATION:E104 (capacity 72)
SUMMARY:It Was Fast on My Machine: What Production Reveals About Web Perfor
 mance - Aditya Patil\, Gargi Kshirsagar
URL:https://pretalx.devconf.info/devconf-cz-2026/talk/JAM8MF/
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