Grzegorz Piwowarek @pivovarit
Founding Engineer @QuesmaOrg, @WarszawaJUG @JDD_Krakow @4Developers @bottega_it | ex @hazelcast Java/Golang/Rust, and dad jokes. Dad jokes are my own. 4comprehension.com https://github.com/pivovarit Joined November 2008-
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Four months of engineering work - I’m proud of the whole team!
Four months of engineering work - I’m proud of the whole team!
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Grzegorz Piwowarek retweeted
Today in QuestDB pt2: @mtopolnik made length(varchar) SQL function faster with the following SWAR code. Previously it was using a much slower UTF-8 parsing routine. This reminds me of cool tricks from @lemire blog.
I'm excited to announce that my improvised @java Project Loom live-coding session ended up being recognized as the best talk on the @4Developers Java track :)
Grzegorz Piwowarek retweeted
Breaking: IBM/Red Hat to announce a merger of Terraform and Ansible named, wait for it, Terrible 🥳.
Grzegorz Piwowarek retweeted
The trial that Splunk brought against @cribl_io is over and the Court has largely sided with Cribl. Splunk's claims for patent infringement, violation of DMCA, and tortious interference were all dismissed. The Court has (once again) affirmed fair use for interoperability. And the…
Grzegorz Piwowarek retweeted
Huge news for anyone working in tech in the US. Noncompetes are now banned: not just in California (like before), but nationwide. Very, very relevant for anyone at Amazon (which is the Big Tech that has enforced noncompetes even for low-level engineering positions).
I must say I'm impressed with how @ClickHouseDB approaches benchmarking: benchmark.clickhouse.com github.com/ClickHouse/Cli…
Grzegorz Piwowarek retweeted
First rule of building distributed systems? Don't. But if you really have to, here is what you need to know, distilled (found in recent issue of excellent @deararchitects newsletter) ferd.ca/a-distributed-…
Grzegorz Piwowarek retweeted
Reasons why SELECT * is bad for SQL performance buff.ly/2XZ04Ev
Grzegorz Piwowarek retweeted
New Post: Parallel Collection Processing with Parallel Collectors and Virtual Threads buff.ly/3xFioIc
Learning @htmx_org with @jakozaur from @QuesmaOrg at @4Developers
See you in 10mins on a special rescue live-coding session about Project Loom @4Developers Track: @java
Grzegorz Piwowarek retweeted
Java rocks More than ever
Dear @4Developers, #4developers @k_zybala can't make it today, so I am stepping in and will show you Project Loom in action instead! 4developers.org.pl/lecture_2024_3…
Starting in 10minutes! @4Developers #4developers
Mastering solving JVM memory leaks with @kcpeppe, thanks @JCreteUnconf @heinzkabutz
Today, I represented @QuesmaOrg on an AI discussion panel - what was unique is that it was held at the main stage of @GPW_WSExchange
Grzegorz Piwowarek retweeted
I keep stumbling upon this very annoying clause by database vendors 1) Why are they doing this? What do they have to hide? 2) Is this clause enforceable? 3) Has it been tried in a precedent? I would never do this to my customers. If I suck, I want to be called out, not sue them
Mario Fusco 🇪🇺�.. @mariofusco
42K Followers 332 Following Java Champion ~ Open source advocate ~ Frequent speaker ~ @jugmilano coordinator ~ Drools project lead at @RedHat ~ Pragmatic dreamer ~ Europeist
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Mario Fusco 🇪🇺�.. @mariofusco
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Josh Long @starbuxman
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Tagir Valeev @tagir_valeev
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Jakub Nabrdalik 🇺�.. @jnabrdalik
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Markus Eisele @myfear
28K Followers 2K Following Something at @RedHat. Legal thinks you need to know that I'm speaking for myself here. I believe you knew.
Alex Xu @alexxubyte
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Brian Goetz @BrianGoetz
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Javarevisited @javarevisited
70K Followers 264 Following @Java blog & @Medium pub https://t.co/e0eEKjA8gJ youtube - https://t.co/nduxveeKOK books - https://t.co/OvnHDk6iZC substack - https://t.co/PfAsZNVzmp courses - https://t.co/nnIp2j69RN
Nicolas Frankel 🇺�.. @nicolas_frankel
14K Followers 30 Following 🥑 Developer Advocate for @ApacheAPISIX ✍️ Blogger at https://t.co/AJgSlLsHp6 👨💻 Consultancy @GarmSol 📖 Author of https://t.co/YYSKxtce2F 🐘 @[email protected]
Jakob Jenkov @jjenkov
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63K Followers 507 Following ♥ Distributed Systems & Cloud 🦆 Author of Kubernetes Patterns 👔 Product Manager @diagridio 🏗️ Ex Architect Red Hat ✍️ Content Creator & Book Reviews👇
Venkat Subramaniam �.. @venkat_s
66K Followers 434 Following Programmer, author, speaker, founder Agile Developer, Inc., co-founder of @dev2next Conference, professor @CSatUH
Sharat Chander | 🟧.. @Sharat_Chander
20K Followers 5K Following 🏳️🌈 🇺🇸 🇮🇳 🇺🇦 🇮🇱 🇵🇸 | LEGACY VERIFIED | 🥃 lover | #DevRel expert | 💜 @DepecheMode | @UofMaryland & @LoyolaMaryland grad | Views mine
Java Guides @GuidesJava
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IntelliJ IDEA, a JetB.. @intellijidea
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OpenSearchProj @OpenSearchProj
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Krystian Zybała @k_zybala
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htmx.org / w4c enthus.. @htmx_org
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Document Database Com.. @DocDatabaseCom
3K Followers 3K Following We talk about technology challenges, assist in the emergence and development of techniques, popularize solutions in the document database space.
Alexius Diakogiannis .. @Diakogiannis
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Michał Michalczuk @michalczukm
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Gavin King ⍼⍼⍼ @1ovthafew
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TCS New York City Mar.. @nycmarathon
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Eric Deandrea (@edean.. @edeandrea
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humans without contex.. @HumansNoContext
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Eudris Cabrera @eudriscabrera
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Next Java Release @nextjavarelease
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Mustafa Suleyman @mustafasuleyman
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Markus Kett @MarkusKett
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Julien Ponge @jponge
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Michael P. Redlich #I.. @mpredli
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Michael Simons @rotnroll666
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Mike Kowalski @mikemybytes
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@simas_ch You'd process the message and keep track of the sequence value in one TX in the consuming system. After committing that, you ack the message. Failure modes: 1) TX fails-> message gets redelivered and retried. 2) Ack fails -> message gets redelivered and ignored as a dup.
@simas_ch That's relatively easy to handle though with a monotonically increasing sequence value added to the outbox events. The consumer just needs to store the latest value it has seen, and if it gets a message with a lower sequence value, it knows that's a duplicate and can discard it.
150k peak i 90% pozytywnych ocen dla @LordsManor 👌🏼
This week was a release week. There are always myriad reasons to postpone. Though shipping early and often is the heartbeat of an early start-up. Though always go through new user hat. Fix the annoyances and ship. Glad we managed to do that.
What a beautiful intro! Thank you :-)
Today in QuestDB pt2: @mtopolnik made length(varchar) SQL function faster with the following SWAR code. Previously it was using a much slower UTF-8 parsing routine. This reminds me of cool tricks from @lemire blog.
"Look ma, I can trade pointer chasing for memory allocations and still win in (some) benchmarks." Seriously, this was quite a rollercoaster. I had a subtle bug causing perf. degradation. After fixing the bug it looks like a win in many situations. 😅😎
Today in QuestDB: @jerrinot is cooking something fancy. That's a specialized single string key hash table. The idea is to avoid redundant allocations and memcpy and, instead, put pointers to mmapped memory in the entries. The mem footprint is much lower and the table is faster.
Today in QuestDB: @jerrinot is cooking something fancy. That's a specialized single string key hash table. The idea is to avoid redundant allocations and memcpy and, instead, put pointers to mmapped memory in the entries. The mem footprint is much lower and the table is faster.
Jake is back! Say “Hi” to Jake!
Vlad has a funny idea of what is "a beginner."
A beginner’s guide to the Write Skew anomaly, and how it differs between 2PL and MVCC vladmihalcea.com/write-skew-2pl…
Może @OficjalneZero oraz @K_Stanowski się zainteresują - czy to w ogóle nie jest interesujący temat?
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