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David Vallejo

@thyng

Analytics OG | Web & App Tracking Expert | CEO @ Analytics Debugger | Tools Creator & Speaker

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12.09.2023
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Latest posts by David Vallejo @thyng

I'm outta here.

04.02.2026 22:01 πŸ‘ 0 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

Live from @supervveek 🍻

Off-agenda Meet & Beers to introduce TagPiper
SGTM, project story & live demo πŸš€

πŸ•— 20:00 CET
πŸ‘‰https://youtube.com/live/_fq9hWwZyWE?feature=share

04.02.2026 13:33 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Holier than thou

03.02.2026 16:14 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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New brushed aluminum finish stickers available :)

30.01.2026 10:50 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I'm adding pre-compiled unboujnd scripts, and moving from a pool of 4 isolates VMs in V8 to 1 isolate with a semaphore for concurrency, we'll see if this improveds the CPU and RAM usage

29.01.2026 22:31 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Ok, never trust real time reports

29.01.2026 12:22 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Wondering what is going GA4 to report in some days ...

29.01.2026 00:45 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Plot Twist: lowing the concurrency and rps to 25, highly improved the tracking, but at this case RT show more views than the we I really sent ...

29.01.2026 00:38 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Now using 16 workers and 50ms delay ( ~320req/sec ). missing data

29.01.2026 00:29 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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hmmm Sent 1000 req to GA4 server side, all returned 204 from Google Endpoint only 764 showing up on Real Time ...

29.01.2026 00:23 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Getting ready for @superweek.bsky.social #SPWK

28.01.2026 19:15 πŸ‘ 7 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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I keep doing tests, a single 4core + 512MB instance, can easily handle 15000 requests with 250 concurrency in barely 9 seconds, with a 1600~ req/s average. 100% success on requestas and backend data relay to GA.

26.01.2026 13:19 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Added proper (zstd) compression to Tagpiper and improved connection handlingβ€”now it’s faster than ever.

26.01.2026 00:32 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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w00h000

25.01.2026 17:01 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I'm running to many commands that I don't really know what they do on the gcloud CLI that I'm really scared for my upcoming monthly billing ...

25.01.2026 15:40 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Every time I build something to give away for free, it ends up costing me money... da dak

25.01.2026 15:16 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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wish me luck ...

25.01.2026 14:43 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

In overall x3 requests performance ( plain text response ), and 1/4 memory usage, on 1 cpu limited instance.

24.01.2026 17:38 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Trying to run some benchmarks,SGTM vs TagPiper.For now just plain HTTP performance.

One limiting the instances to 512Mb RAM and 1 CPU to match usual Cloud Run setup

Second one unlimited. SGTM is not using multithread so not much comparable,also not usually needed since you'll likely using one CPU.

24.01.2026 17:36 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I'm pretty bad on this... but how can I load a local Docker on a Cloud run ?

23.01.2026 20:23 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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The current tagpiper metrics for GA4 hits for example looks pretty good.

20.01.2026 12:02 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

This is gonne a lot of work though, but at some point it may be worth it.

19.01.2026 22:55 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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I'm trying to build GTM Templates like sandbox that will replicate the current GTM code, this would make easier for people to migrate their templates, or even at some point making GTM ones directly to work on TagPiper

19.01.2026 22:54 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I think I'm moving to use v8 engine instead of GOJA,while the difference for the server-side usage won't make any big difference having full access to JS ES6+ will make some future features possible,but since this needs CGO,container size will upgrade to 95ish mb,which shouldn't either be a big deal

19.01.2026 22:35 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Some Nodes realtime stats

19.01.2026 16:42 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Then why adobe analytics, why piwik, why amplitude, why piano, why ... should I keep going ?

19.01.2026 14:04 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Honest reply: why not?

19.01.2026 13:51 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Introducing TagPiper tagpiper.com

18.01.2026 21:09 πŸ‘ 3 πŸ” 1 πŸ’¬ 3 πŸ“Œ 0
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Working on some more nicer code snippets for the blog

17.01.2026 00:23 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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🀫

14.01.2026 22:21 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0