Jiekun

上个月随公司 #VictoriaMetrics 在 #KubeCon 上分享了如何在 #OpenTelemetry 中实践 Retroactive Sampling（回溯采样）。本着能写就不要浪费的原则，把演讲内容整理成了博客。 相比尾部采样，它能节约 60% 内存，考虑到现在内（金）存（子）的天价，应该或多或少有点意义 :) jiekun.dev/posts/kubecon-…

The recording of our talk about Retroactive Sampling with #OpenTelemetry is available on Youtube now! Slides here: docs.google.com/presentation/d… youtube.com/watch?v=ehKzt_…

Few people print photos now. No cam film, no darkroom. If someone does it, there must be sth meaningful :) I didn't keep any team photos when working on-site as everyone was always sitting together. Remote work is different. 现在很少人还印照片了，如果有，那肯定是有什么值得记住的

@strrlthedev 金价内存让这个事情变得更有趣了:) 开二手电脑店，是当代程序员唯一出路。

@ReadTheDuck 泰酷辣

上个月随公司 #VictoriaMetrics 在 #KubeCon 上分享了如何在 #OpenTelemetry 中实践 Retroactive Sampling（回溯采样）。本着能写就不要浪费的原则，把演讲内容整理成了博客。 相比尾部采样，它能节约 60% 内存，考虑到现在内（金）存（子）的天价，应该或多或少有点意义 :) jiekun.dev/posts/kubecon-…

@foshuoai @hagen1778 没有只存储 status code 这一说吧，每个 span 都是完整的。精简的只是采样过程的数据，一旦确认被采样了，本地 Agent 需要提供完整的原始 span。希望我没理解错问题

@ReadTheDuck @hagen1778 失败的请求只存储 status code 是不是太少了，失败请求其他 attributes 上下文还是很重要的，该如何考虑呀

12点半从房间关电脑里走出来，有种小学的时候在网吧偷偷打游戏然后又下机的感觉😂🤣不是，可是上班跟上网明明不一样啊😇

Good day @KubeCon_ Amsterdam, many thanks to everyone who’s joined our session retroactive sampling in #OpenTelemetry yesterday, and also big thanks to my co-speaker @hagen1778

@valyala Thank you now someone will have the motivation to steal it, and rename it as vtagent.

vlagent is the most cost-efficient log collector for Kubernetes! It beats Vector, Grafana Agent, OTEL collector and other popular log collectors for Kubernetes. If you don't want wasting gigabytes of RAM and multiple CPU cores per Kubernetes node on logs' collection, then try vlagent (it is used by the official Helm chart for collecting Kubernetes logs - docs.victoriametrics.com/helm/victoria-… ). Check out the detailed benchmark - victoriametrics.com/blog/log-colle…

@xu_paco 今年还来 AMS 玩吗

假装在荷兰🇳🇱😄 kubecon 下周开始，敬请期待

郁金香🌷

One of the most thorough #Logs shippers benchmarks I've seen. Covering Vector, Promtail, Grafana Alloy, Fluent Bit, OpenTelemetry Collector, and more. A benchmark suite, steps to reproduce, Grafana snapshots - all is there. Well worth a read: victoriametrics.com/blog/log-colle…

Our biggest open-source repos are getting overwhelmed by AI slop which literally makes Github unusable (~a new pull request every 3 minutes). Fun new challenges in an agentic world!

kinda crazy how VictoriaMetrics/VictoriaLogs came out of nowhere and got popular. I have no idea where they rank as an APM. what are primary reasons people are choosing this solution? is there a better scalability story?

早教 day 1：带 BB 听古典☺️ Early education Day 1: Listen to classical music ☺️ Well he don't like it, at all. Maybe he just dont like this guy who play the piano.

Tail sampling in #OpenTelemetry is NOT free — just look at how many resources you’re wasting (2x CPUs & 3x Mem) to drop junk traces. Tail sampling isn’t the only way out. Join our #KubeCon session and see how **Retroactive Sampling** can fix it. sched.co/2CW83

@syshukus @valyala @_m27e 🤔🤔The underlying storage for all VictoriaStack projects is the local disk. Unlike other observability projects that use external storage such as ClickHouse, object storage, Elasticsearch etc..., VictoriaStack does not rely on external storage solutions.

@valyala @_m27e Wait, but you use clickhouse as underlying storage, correct? Do you expect any performance differences?

Clickhouse is insane. Wrote this terrible query to sketch an idea and it completed in 2ms across 26M events. This query (probably) would've crashed pg.

Very clear explanation on how Go memory allocator works.

working remotely for 1.5y my fatty liver and blood sugar have gotten worse. remote work blurs boundaries, but it’s mostly due to poor time management. boost efficiency and invest those 30mins you saved fromcommute into exercise💪and Im gonna to say goodbye to KFC🍟this year

为什么能做到这么反人类混用 Protobuf 和 JSON🤣😅 图啥啊 Grafana Tempo 的接口文档上写默认都是 JSON，简单试了几个也确实是 JSON，实现完之后发现特定接口 Grafana 会要求 Content Type Protobuf... 结果就是整完一大堆发现不行，Grafana 不认，又得重新用 pb 写一遍.........

The #OpenTelemetry demo takes minutes to start. How can people still be shipping GB-sized images in 2026? It takes 2mins to pull a SINGLE image from the registry at 10M/s… and that’s not even counting all the others.🤣 Meanwhile, #VictoriaMetrics image is just 20MB. Clean.

Grafana（LGTM）的文档做得不够好，是我的错觉吗还是都有这样的印象...？ API 响应不给具体结构：#query" target="_blank" rel="nofollow noopener">grafana.com/docs/tempo/lat… TraceQL 的具体语法散落在多个地方： 1. grafana.com/docs/tempo/lat… 2. grafana.com/docs/tempo/lat… 以 Grafana 为镜，可以知道用户为什么不爽 —— 旧唐书・魏徵传