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Philipp Krenn

@xeraa.net
40 followers 29 following 351 posts

🎩 of DevRel & Developer 🥑 at Elastic — posts about Elasticsearch, Kibana, search, observability, security

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Philipp Krenn @xeraa.net · 15/09/2026
6,000,000,000 downloads of elasticsearch, kibana, logstash, beats, elastic agent to everyone who downloaded it, built on it, contributed to it, deployed it, broke it, fixed it, and made something amazing with it: thank you
6B downloads of the ELK
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Philipp Krenn @xeraa.net · 03/09/2026
after all the attention for duckdb's acquisition by AWS: one of my favorite things is their "why @duckdb.org" page — duckdb.org/why_duckdb explainining their tradeoffs and goals; and how they try to achieve those through technical means
duckdb
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Philipp Krenn @xeraa.net · 02/09/2026
"Float Bloat: vector serialization gone wrong" by storing float64 instead of float32. it's a surprising problem but with elasticsearch you're in luck: * since 9.2 (index creation) `index.mapping.exclude_source_vectors` is on by default — you don't store the floats in source at all any more 1/3
float bloat
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Philipp Krenn @xeraa.net · 19/08/2026
first hack night in the new @elastic.co san francisco office together with mastra tomorrow: build and compete on prices with agent memory already at 250 RSVP but thanks to the new space we can squeeze in a few more: luma.com/mastra-hack 🤞 for tomorrow
video wall
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Philipp Krenn @xeraa.net · 10/08/2026
current state of job offers — without wanting to imply anything 😂 unless it's a hack to get all the attention for this job
🫠
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Philipp Krenn @xeraa.net · 17/07/2026
we caught a fake coding interview to steal your developer credentials on the @elastic.co community slack. be extra careful with anyone DMing you files to download and run full analysis: www.elastic.co/security-lab...
slack
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Philipp Krenn @xeraa.net · 22/06/2026
what a silly game 😅
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Philipp Krenn @xeraa.net · 22/06/2026
are you in the weights? it's the new klout also works for products (though reluctantly) #elasticsearch intheweights.com
elasticsearch
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Philipp Krenn @xeraa.net · 14/04/2026
more cursor skills in the wild — here and everywhere else. spin up an elasticsearch cluster, manage kibana, configure security, set up OTel,... and almost hidden under it is also the brand new MCP endpoint for the @elastic.co docs cursor.com/marketplace/...
https://cursor.com/marketplace/elastic
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Philipp Krenn @xeraa.net · 09/04/2026
BM25: "why won't you die?!" > the lexical retriever BM25 with appropriate setup outperforms neural rankers in most cases; notably, gpt-oss-20b with BM25 on the passage corpus achieves the highest answer accuracy across all retrieval settings in our study;
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Philipp Krenn @xeraa.net · 02/04/2026
is it an API key for a cloud account or the cluster? way too common of a confusion. so why not both?! released today for serverless projects and your @elastic.co cloud account PS: please be extra careful in your day to day use with these. they have an extra wide blast radius 💥
API key
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Philipp Krenn @xeraa.net · 31/03/2026
someone woke up at RSA and chose violence: vibecoded.vc/cooked/ 😂 though it is entertaining (and I won't agree on all of the takes ;) )
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Philipp Krenn @xeraa.net · 16/03/2026
obligatory GTC keynote tweet when you make the top slides: building HNSW graphs with up to 12x the throughput and 7x faster merges on elasticsearch and NVIDIA cuVS (a GPU-accelerated library for vector search)
keynoteindexing
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Philipp Krenn @xeraa.net · 16/03/2026
nvidia GTC where every second word (spoken and on booths) is AI, agent, or token 😬 PS: who else is around?
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Philipp Krenn @xeraa.net · 11/03/2026
BM25 for "sparse visual-word activations"? arxiv.org/abs/2603.05781 BM25 just refuses to disappear or even take the back set for retrieval
paper
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Philipp Krenn @xeraa.net · 09/03/2026
soon... and there's already the .md version for every elastic docs page and you can download the full docs as MD in a ZIP file too
mcp inspector
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Philipp Krenn @xeraa.net · 07/03/2026
the irony on the vibecoding subreddit
reddit
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Philipp Krenn @xeraa.net · 01/03/2026
outage scenario: electricity turned off because of a drone / rocket attack ongoing updates: health.aws.amazon.com/health/status
UAE
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Philipp Krenn @xeraa.net · 27/02/2026
models have personalities in their recommendations and how conservative or cutting edge they are — massive differences even within a close "family" 4/5
models splitpersonalities
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Philipp Krenn @xeraa.net · 27/02/2026
new defaults — some general and some language specific (the report is very JS and python focused) 3/5
default stackdefaults
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Philipp Krenn @xeraa.net · 27/02/2026
depending on the area, there is a clear bias towards building vs buying feature toggles as a full blown company were always a weird choice... 2/5
build vs buy
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Philipp Krenn @xeraa.net · 27/02/2026
*claude code is the new gatekeeper* fascinating report on the choices claude makes, build vs buy, the personality of different models, and who is winning / losing 1/5 PS: when creating code is cheap, the new moat is distribution
article
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Philipp Krenn @xeraa.net · 25/02/2026
4x performance improvement by upgrading from #elasticsearch 8 to 9. "this one weird trick your cloud provider / hardware vendor hates" 😉 medium.com/trendyol-tec... PS: I have a hunch what made the difference here
overviewlatencyconclusion
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Philipp Krenn @xeraa.net · 19/02/2026
2 new #jina models have entered the embedding arena — v5 multilingual: * small: 1024 dim, 32K context * nano: 768 dim, 8K context both support matryoshka dimension truncation (32+) and are at the top of current benchmarks — especially for their parameter size publicly accessible (non-commercial)
overviewmultilingualenglishretrieval
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Philipp Krenn @xeraa.net · 13/02/2026
* OpenClaw agent opening a PR on matplotlib * reviewer rejects it per the repo's policies * agent replies with a personal attack github.com/matplotlib/m...
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Philipp Krenn @xeraa.net · 12/02/2026
* different views per solution and you can filter by version or other labels `label:"v9.3.0"` * the underlying issue describes what it does, for who, and the value proposition take a look on github.com/orgs/elastic... comments are currently disabled but let us know if that's a deal-breaker 2/2
details
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Philipp Krenn @xeraa.net · 12/02/2026
new public #elastic roadmap: * covering key initiatives like ES|QL, better dashboards,... * recently shipped features (those are our fiscal quarters) * upcoming features as in-progress, near-term, and mid-term 1/2
overviewfuture
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Philipp Krenn @xeraa.net · 08/02/2026
catching up on the search dev room at #FOSDEM: lots of good stuff on fosdem.org/2026/schedul... glad we (or carly richmond) could put this together again. this won't be the last one. PS: given our colorful past, it's especially great to be back at FOSDEM pushing the search dev room and OSS :)
scheduleroom 1room 2
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Philipp Krenn @xeraa.net · 21/01/2026
come on, do something
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Philipp Krenn @xeraa.net · 19/01/2026
targeted billing emails work 😬
alertusage
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Philipp Krenn @xeraa.net · 17/01/2026
jina-clip-v2 uses a multi-task, multi-stage contrastive learning strategy to align multilingual text and image representations to work well at both cross-modal and text-only retrieval. it excels at visually rich documents while flexibly truncating embedding dimensions arxiv.org/abs/2412.08802
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Philipp Krenn @xeraa.net · 17/01/2026
ReaderLM-v2 uses a new three-stage data synthesis pipeline called "draft-refine-critique" alongside a unified training framework to transform messy HTML into structured data, making it a highly effective tool that outperforms much larger models on web content extraction arxiv.org/pdf/2503.01151
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Philipp Krenn @xeraa.net · 17/01/2026
jina-embeddings-v4 works by projecting text & images into a shared semantic space using a unified Qwen2.5-VL backbone and task-specific LoRA adapters, which minimizes the modality gap and enables SOTA retrieval of visually rich documents via single- and multi-vector outputs arxiv.org/abs/2506.18902
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Philipp Krenn @xeraa.net · 17/01/2026
jina-reranker-v3 uses a new "last but not late" interaction strategy that processes the query and multiple documents simultaneously in a single shared context window, allowing it to capture cross-document and query-document relationships with its compact 0.6B parameter model arxiv.org/abs/2509.25085
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Philipp Krenn @xeraa.net · 17/01/2026
long US weekend — great time to catch up on some @JinaAI_ papers about rerankers and code / multilingual / multimodal embeddings: * jina-reranker-v3 * jina-code-embeddings * jina-embeddings-v4 * ReaderLM-v2 * jina-clip-v2
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Philipp Krenn @xeraa.net · 15/01/2026
san francisco in january (downtown / FiDi)
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Philipp Krenn @xeraa.net · 14/01/2026
free and OSS alternative to CleanShot X: www.bettershot.site because not everything needs 100 features and a cloud service... PS: just added an issue for homebrew support
better shot
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Philipp Krenn @xeraa.net · 07/01/2026
earning a living with OSS was never easy. but it just seems to be getting harder with LLMs like for tailwind, which ironically LLMs love: github.com/tailwindlabs... not an encouraging thought
tailwind
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Philipp Krenn @xeraa.net · 30/12/2025
anybody tried z.ai in anger? not sure about the quality other than the claims; there is a more in-depth paper: arxiv.org/abs/2508.06471 but the pricing looks really hard to beat and you can just put it "under" the common tools
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Philipp Krenn @xeraa.net · 28/12/2025
back at home to upset the neighbors: mr 🐿️ was not pleased by my presence — only wants nuts unobserved
🐿️
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Philipp Krenn @xeraa.net · 25/12/2025
how to clean up an ancient (8 years!) #elasticsearch cluster with MCP + #claude: frutik.medium.com/robots-vs-zo... PS: not being able to delete indices might be a bit of a feature
outdatedstill activestill activedelete
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Philipp Krenn @xeraa.net · 20/12/2025
final friday elky of the year — already in the well rounded holiday version 😀 I‘m off to europe for a bit now
elky
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Philipp Krenn @xeraa.net · 18/12/2025
latest malware benchmarks from www.av-comparatives.org/tests/busine... PS: still surprised to see elastic in the list and how well we're doing — caught everything in 2025
Real-World Protection Test (August-November)Malware Protection Test (September)
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Philipp Krenn @xeraa.net · 16/12/2025
finally got some billing alerts in @elastic.co cloud less relevant with static setups. much more relevant with #serverless projects — don't judge all the projects running here docs in www.elastic.co/docs/deploy-... with more options to come — I'd love to see billing groups and flexible thresholds
setupconfigresult
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Philipp Krenn @xeraa.net · 13/12/2025
riding into the christmas season #elkOnTheShelf
elky
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Philipp Krenn @xeraa.net · 13/12/2025
I spy a @jina.ai model on @elastic.co cloud 🙃
setupdocs
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Philipp Krenn @xeraa.net · 11/12/2025
I'm not sure how intuitive I find the query at the bottom and the result on top. also it feels like a lot of clicking around for "viewer" vs "REST, the tabs, HTTP methods and query / body / settings though multiple tabs, saving requests, templates,... are kind of neat
GET /indexsearch
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Philipp Krenn @xeraa.net · 11/12/2025
started elasticsearch only with start-local for a quick test nice that it supports no auth, basic auth, and API keys. and you can store various connections ℹ️ since I rotate my local installations around a lot (with random API keys), I'm not storing them but just go for the "ask every time"
start-localconnection
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Philipp Krenn @xeraa.net · 11/12/2025
small native macOS GUI client for Elasticsearch — on the app store quick peek and where I think it fits between kibana and cURL / postman / ...
app store
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Philipp Krenn @xeraa.net · 11/12/2025
TIL about pyinfra — ansible but python instead of yaml and a lot faster I'd be interested in faster but I'm not sure I see the full advantage in python; at least not for the simple examples they show
logoexample
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