# hackday Published articles for hackday. This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## SymfonyCon Warsaw 2026: From Serializer to JsonStreamer: the debrief DevFeed: [SymfonyCon Warsaw 2026: From Serializer to JsonStreamer: the debrief]() Original publisher: [Read original article]() Author: Mélyne FREUZE Published: 2026-10-19T12:30:00Z Content type: news Language: en Sources: [Symfony]() Topics: [Symfony]() Tags: [conference](), [hackday](), [symfony](), [warsaw]() ### AI overview SymfonyCon Warsaw 2026 announced a talk by Gary Pegeot of Argo about replacing Symfony's Serializer with JsonStreamer after custom Normalizers made reindexing millions of Elasticsearch documents across 10 indexes take hours. The talk will cover the proof of concept, challenges, lessons, and possible application to other projects. ### Source excerpt Looking forward to connecting with the PHP and Symfony community? Join us at SymfonyCon Warsaw 2026 on November 26-27. Expect great conversations, 3 talk tracks, and lots of learning together. 🎤 Speaker announcement Get ready to welcome Gary Pegeot,... ## Running a Hack Day DevFeed: [Running a Hack Day]() Original publisher: [Read original article]() Author: Jossi Wolf Published: 2020-12-01T20:46:31Z Content type: tutorial Language: en Sources: [Jossi Wolf]() Topics: [Hackathon](), [software-development](), [Hackathon-Organiser](), [Learning](), [Jetpack Compose]() Tags: [android](), [exploring](), [hack-days](), [hackday](), [programming](), [running](), [stories](), [team-building](), [teamwork](), [technology]() ### AI overview A hack day gives people a scheduled, optional space to explore new technology or work on something different, easing project fatigue and making collaboration across teams easier. The article says hack days complement individual learning time: a defined event can help people who otherwise feel too busy or hesitant to set aside time. Its planning guidance includes setting goals, choosing an audience and optional topic, announcing the event two weeks to a month ahead, and providing a flexible schedule, starter resources, and setup requirements. On the day, organizers can encourage questions and pair coding, then invite participants to share what they learned. The article recommends gathering feedback afterward. Benefits depend on the team and context. ### Source excerpt Recently, some clients asked us about our opinion on a newly released framework. To get a better idea of it, we ran an internal hack day -- here's how! Stay tuned for the second part about our experiences with running Jetpack Compose hack day! What's a Hack Day? Basically, a hack day is a one-day event where you can work on whatever. This is awesome for exploring a new technology or just doing something different once in a while! There are no rules except for that what you're doing should probably be kinda related to your work, but it doesn't have to be! Why you should run a hack day There are lots of reasons to love hack days -- I'll focus on a few. The benefits will always be a different depending on your company, team and the tech you are working with. It helps people break out of day-to-day work life A hack day can enable working with different people and build connections If you do it right, people will be able to relax a bit A fun breakout First off, hack days are a great thing to break out of day-to-day dev life. Project fatigue gets everyone after a while. Maybe the work is not mundane or boring, but working on exactly the same thing every day can get tedious. The longer you work on a project, the harder the challenges become and the longer the cycles of success/no success become. On a hack day, you will be working on something entirely different, without any expectations. This makes it a lot easier to learn, takes some pressure off and can be very satisfying. Teamwork!Teamwork Since a hack day is a defined space and time for folks to work on something, this makes working together a lot easier -- you're there anyway! Working on something alone can be nice, and maybe that's exactly what somebody is looking for. For others, learning together is a lot more fun and more memorable. Interacting with folks from different teams In our case, we had people working together who normally work on different projects. This helps create connections and makes the team grow toge