Philipp Krenn
@xeraa.net
🎩 of DevRel & Developer 🥑 at Elastic — posts about Elasticsearch, Kibana, search, observability, security
while we all love ourselves some ML, sometimes all you need is a little bit of math. great post from one of my colleagues on how to tune your shopping results based on history (with a function score)
alexmarquardt.com/personalizin...
alexmarquardt.com/personalizin...
November 12, 2025 at 7:35 AM
while we all love ourselves some ML, sometimes all you need is a little bit of math. great post from one of my colleagues on how to tune your shopping results based on history (with a function score)
alexmarquardt.com/personalizin...
alexmarquardt.com/personalizin...
got the right "business" cards for #KubeCon
sorry, no YAML 😉
this was more fun to build than expected: @claudeai generated HTML design with a *download as image* button. @MOO to print and ship them
github.com/xeraa/code-c... for the implementation
sorry, no YAML 😉
this was more fun to build than expected: @claudeai generated HTML design with a *download as image* button. @MOO to print and ship them
github.com/xeraa/code-c... for the implementation
November 8, 2025 at 12:36 AM
got the right "business" cards for #KubeCon
sorry, no YAML 😉
this was more fun to build than expected: @claudeai generated HTML design with a *download as image* button. @MOO to print and ship them
github.com/xeraa/code-c... for the implementation
sorry, no YAML 😉
this was more fun to build than expected: @claudeai generated HTML design with a *download as image* button. @MOO to print and ship them
github.com/xeraa/code-c... for the implementation
fun #TLS fact: why would you want your own certificate authority (CA) over a public one?
if you form a cluster (like elasticsearch), you want to control who can join 1/3
if you form a cluster (like elasticsearch), you want to control who can join 1/3
November 6, 2025 at 10:43 AM
fun #TLS fact: why would you want your own certificate authority (CA) over a public one?
if you form a cluster (like elasticsearch), you want to control who can join 1/3
if you form a cluster (like elasticsearch), you want to control who can join 1/3
the #elasticsearch API docs always had cURL and console examples. a while ago we added dynamic languages (python, JS, ruby, PHP)
now, we have the first static language with java
big API surface so this will come in handy. even if just to tell an LLM "no, use the API like this" 😉
now, we have the first static language with java
big API surface so this will come in handy. even if just to tell an LLM "no, use the API like this" 😉
November 4, 2025 at 4:21 PM
the #elasticsearch API docs always had cURL and console examples. a while ago we added dynamic languages (python, JS, ruby, PHP)
now, we have the first static language with java
big API surface so this will come in handy. even if just to tell an LLM "no, use the API like this" 😉
now, we have the first static language with java
big API surface so this will come in handy. even if just to tell an LLM "no, use the API like this" 😉
#CalHacks was a crazy weekend. great projects with @elastic.co agent builder, RAG, geo and timeseries data: lnkd.in/dJ6H5cAk
PS: we also served a ton of (monitored) coffee. but that‘s for a separate post…
PS: we also served a ton of (monitored) coffee. but that‘s for a separate post…
October 27, 2025 at 5:42 AM
#CalHacks was a crazy weekend. great projects with @elastic.co agent builder, RAG, geo and timeseries data: lnkd.in/dJ6H5cAk
PS: we also served a ton of (monitored) coffee. but that‘s for a separate post…
PS: we also served a ton of (monitored) coffee. but that‘s for a separate post…
AWS outage / post-mortem: not one but two follow-up problems. and of course it started with DNS 😬
aws.amazon.com/message/101925/
aws.amazon.com/message/101925/
October 23, 2025 at 7:41 AM
AWS outage / post-mortem: not one but two follow-up problems. and of course it started with DNS 😬
aws.amazon.com/message/101925/
aws.amazon.com/message/101925/
#ElasticON closing keynote by @swyx: the year agents ate search
from RAG, agentic RAG, and context engineering subagents 🔮
from RAG, agentic RAG, and context engineering subagents 🔮
October 21, 2025 at 11:24 PM
#ElasticON closing keynote by @swyx: the year agents ate search
from RAG, agentic RAG, and context engineering subagents 🔮
from RAG, agentic RAG, and context engineering subagents 🔮
how much data can you get from coffee? a lot ☕️
this has been a fun project — from sending the data with OTLP to watching every step. can‘t wait to bring it to events and show streams of logs to dashboards
this has been a fun project — from sending the data with OTLP to watching every step. can‘t wait to bring it to events and show streams of logs to dashboards
October 20, 2025 at 4:30 AM
how much data can you get from coffee? a lot ☕️
this has been a fun project — from sending the data with OTLP to watching every step. can‘t wait to bring it to events and show streams of logs to dashboards
this has been a fun project — from sending the data with OTLP to watching every step. can‘t wait to bring it to events and show streams of logs to dashboards
next week will be extra @elastic.co-packed in SF
monday: luma.com/smart-search
* ghita, @zeroentropyai.bsky.social: search tools for efficient AI agents
* jesse, fintools: LLMs and the next generation of financial search
* josh, reducto: vision-first RAG pipeline with reducto and elasticsearch
monday: luma.com/smart-search
* ghita, @zeroentropyai.bsky.social: search tools for efficient AI agents
* jesse, fintools: LLMs and the next generation of financial search
* josh, reducto: vision-first RAG pipeline with reducto and elasticsearch
Smarter Search, Smarter AI: RAG, Rerankers & Real-World Impact · Luma
Search isn’t just about finding answers anymore, it’s becoming the core infrastructure behind intelligent AI agents. This Monday, we’re bringing together…
luma.com
October 18, 2025 at 12:43 AM
next week will be extra @elastic.co-packed in SF
monday: luma.com/smart-search
* ghita, @zeroentropyai.bsky.social: search tools for efficient AI agents
* jesse, fintools: LLMs and the next generation of financial search
* josh, reducto: vision-first RAG pipeline with reducto and elasticsearch
monday: luma.com/smart-search
* ghita, @zeroentropyai.bsky.social: search tools for efficient AI agents
* jesse, fintools: LLMs and the next generation of financial search
* josh, reducto: vision-first RAG pipeline with reducto and elasticsearch
reddit answers — and I‘m not sure if they are trying to troll me or not: wooden data centers 😅
sounds like a logstash situation too
sounds like a logstash situation too
October 13, 2025 at 9:14 PM
reddit answers — and I‘m not sure if they are trying to troll me or not: wooden data centers 😅
sounds like a logstash situation too
sounds like a logstash situation too
and we got brand new toy. I hope that we can roll out coffee and related dashboards next week ☕️ #ElasticON
October 13, 2025 at 8:47 PM
and we got brand new toy. I hope that we can roll out coffee and related dashboards next week ☕️ #ElasticON
we'll have #ElasticON SF next week. I'm especially excited to have convinced @swyx.io to join us for the closing keynote on "the year agents ate search" — let's see how much we can all agree or disagree here :D
www.elastic.co/events/elast... (and we still have a couple of free slots available)
www.elastic.co/events/elast... (and we still have a couple of free slots available)
October 13, 2025 at 8:43 PM
we'll have #ElasticON SF next week. I'm especially excited to have convinced @swyx.io to join us for the closing keynote on "the year agents ate search" — let's see how much we can all agree or disagree here :D
www.elastic.co/events/elast... (and we still have a couple of free slots available)
www.elastic.co/events/elast... (and we still have a couple of free slots available)
AI gateways: envoy + elastic observability from adrian cole (we‘re going back to the zipkin days) #ElasticON
starting off with: what is agentic?
starting off with: what is agentic?
October 9, 2025 at 6:39 PM
AI gateways: envoy + elastic observability from adrian cole (we‘re going back to the zipkin days) #ElasticON
starting off with: what is agentic?
starting off with: what is agentic?
how do you get recommendations on tinder? a dee dive into the implementation of retrieval and ranking for millions of users and likes, billions of messages and swipes #ElasticON
October 9, 2025 at 5:31 PM
how do you get recommendations on tinder? a dee dive into the implementation of retrieval and ranking for millions of users and likes, billions of messages and swipes #ElasticON
kicking off #ElasticON NYC. I‘ll put the most relevant context (😉) in this thread — it will be a busy day
starting with joining forces with @jina.ai and @elastic.co www.elastic.co/blog/elastic... 🤗
starting with joining forces with @jina.ai and @elastic.co www.elastic.co/blog/elastic... 🤗
October 9, 2025 at 2:01 PM
kicking off #ElasticON NYC. I‘ll put the most relevant context (😉) in this thread — it will be a busy day
starting with joining forces with @jina.ai and @elastic.co www.elastic.co/blog/elastic... 🤗
starting with joining forces with @jina.ai and @elastic.co www.elastic.co/blog/elastic... 🤗
so, vibe coding is over. now it‘s vibe engineering? though it‘s probably time to move beyond YOLO coding (for production)
simonwillison.net/2025/Oct/7/v...
simonwillison.net/2025/Oct/7/v...
October 8, 2025 at 5:26 AM
so, vibe coding is over. now it‘s vibe engineering? though it‘s probably time to move beyond YOLO coding (for production)
simonwillison.net/2025/Oct/7/v...
simonwillison.net/2025/Oct/7/v...
bringing more monitoring love to your self-managed / on-prem #elasticsearch clusters with AutoOps: pull stats with an OTel based agent, get recommendations and issue-detection in real-time
PS: and soon inference on GPUs as well (so you don't have to go to OpenAI etc any more) 1/3
PS: and soon inference on GPUs as well (so you don't have to go to OpenAI etc any more) 1/3
October 7, 2025 at 10:28 AM
bringing more monitoring love to your self-managed / on-prem #elasticsearch clusters with AutoOps: pull stats with an OTel based agent, get recommendations and issue-detection in real-time
PS: and soon inference on GPUs as well (so you don't have to go to OpenAI etc any more) 1/3
PS: and soon inference on GPUs as well (so you don't have to go to OpenAI etc any more) 1/3
the joys of open source...
also, poor everyone org on github 😅
also, poor everyone org on github 😅
October 1, 2025 at 10:30 PM
the joys of open source...
also, poor everyone org on github 😅
also, poor everyone org on github 😅
wish that #reddit quotations in LLMs would stay low, so we could just have conversations and not fight all the spam and bots
not sure how accurate the data is but interesting in any case: promptwatch.com/data/top-cha...
not sure how accurate the data is but interesting in any case: promptwatch.com/data/top-cha...
October 1, 2025 at 10:09 PM
wish that #reddit quotations in LLMs would stay low, so we could just have conversations and not fight all the spam and bots
not sure how accurate the data is but interesting in any case: promptwatch.com/data/top-cha...
not sure how accurate the data is but interesting in any case: promptwatch.com/data/top-cha...
how to avoid deadlocks if you run 300 #elasticsearch clusters like palantir. and you pick the trickiest combination of configuration + client calls:
* concurrent synchronous refresh
* wait_for with long refresh intervals
* concurrent synchronous refresh
* wait_for with long refresh intervals
September 30, 2025 at 12:14 AM
how to avoid deadlocks if you run 300 #elasticsearch clusters like palantir. and you pick the trickiest combination of configuration + client calls:
* concurrent synchronous refresh
* wait_for with long refresh intervals
* concurrent synchronous refresh
* wait_for with long refresh intervals
if virtual hackathons are your thing, we might have something there (with decent 💸): ai-accelerate.devpost.com
and with the new agent builder features (built-in LLM, queries as tools, native MCP,...) there are some useful new toys available for it too
and with the new agent builder features (built-in LLM, queries as tools, native MCP,...) there are some useful new toys available for it too
September 23, 2025 at 4:37 AM
if virtual hackathons are your thing, we might have something there (with decent 💸): ai-accelerate.devpost.com
and with the new agent builder features (built-in LLM, queries as tools, native MCP,...) there are some useful new toys available for it too
and with the new agent builder features (built-in LLM, queries as tools, native MCP,...) there are some useful new toys available for it too
new MCP registry from @github.com: github.blog/ai-and-ml/gi...
looking at the current npm security disaster, we definitely need more trusted sources for dependencies 😬
looking at the current npm security disaster, we definitely need more trusted sources for dependencies 😬
September 16, 2025 at 11:37 PM
new MCP registry from @github.com: github.blog/ai-and-ml/gi...
looking at the current npm security disaster, we definitely need more trusted sources for dependencies 😬
looking at the current npm security disaster, we definitely need more trusted sources for dependencies 😬
failure catalog of AI apps — not sure I've seen it spelt out that way before
not sure what to think of the product behind it but the list and ways to approach the problem look pretty useful: github.com/onestardao/W...
not sure what to think of the product behind it but the list and ways to approach the problem look pretty useful: github.com/onestardao/W...
August 26, 2025 at 6:23 PM
failure catalog of AI apps — not sure I've seen it spelt out that way before
not sure what to think of the product behind it but the list and ways to approach the problem look pretty useful: github.com/onestardao/W...
not sure what to think of the product behind it but the list and ways to approach the problem look pretty useful: github.com/onestardao/W...
build an intelligent query layer with MCP in #elasticsearch — from search to agent
here's a preview how ES|QL queries turn into tools that get aggregated into agents — all served and built right in kibana. and you can try this out today
here's a preview how ES|QL queries turn into tools that get aggregated into agents — all served and built right in kibana. and you can try this out today
August 21, 2025 at 10:57 AM
build an intelligent query layer with MCP in #elasticsearch — from search to agent
here's a preview how ES|QL queries turn into tools that get aggregated into agents — all served and built right in kibana. and you can try this out today
here's a preview how ES|QL queries turn into tools that get aggregated into agents — all served and built right in kibana. and you can try this out today