Oren Eini

aka Ayende Rahien

Oren Eini

CEO of RavenDB

a NoSQL Open Source Document Database

Get in touch with me:

oren@ravendb.net

+972 52-548-6969

Posts: 7,546

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Comments: 51,161

Copyright ©️ Ayende Rahien 2004 — 2025

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Couchbase vs RavenDB Performance at Rakuten Kobo Whitepaper

Nov 13 2015

Technical observations from my wifeProduction issues

time to read 1 min | 120 words

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humor

So I was telling my wife about this issue, and she had two interesting comments.

When I told her that the customer was complaining about performance, she stopped me to figure out what I meant by that. When I told her that they had to wait for 20 minutes, her response was:

Oh, I thought you were talking about 1/16 of a millisecond here again. Well, if it is 20 minutes, why make a fuss about it? They should go have a cup of coffee or something.

The second observation was when I told her that we narrowed things down to suggestions taking up a lot of a CPU:

Oh, so you told them to go and buy some more RPM, right?

Sep 15 2015

Technical observations from my wifeDisk speeds

time to read 1 min | 84 words

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humor

My wife complained that her laptop was running slow. We had a discussion that went something like this:

Me: Okay, I think I know what is going on, this laptop has a HD with 5,400 RPM.
Wife: …
Me: …
Wife: …
Me: Okay, RPM is how fast the drive spins. The faster it spin, the faster it is. This is 5,400 RPM drive, and usually you want 7,200 RPM drive.
Wife: So go to the store and buy me another 2,000 RPM.

Aug 27 2015

Technical observations from my wifePerformance

time to read 1 min | 49 words

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humor

I was telling my wife about my day at work, and the conversation went something like that:

Me: So we spent all day trying to optimize this really expensive query.
Wife: What made it so expensive?
Me: We weren’t sure, but it run for 300 – 400 ms!
Wife: You are so impatient.

FUTURE POSTS

Partial writes, IO_Uring and safety - about one day from now
Configuration values & Escape hatches - 5 days from now
What happens when a sparse file allocation fails? - 7 days from now
NTFS has an emergency stash of disk space - 9 days from now
Challenge: Giving file system developer ulcer - 12 days from now

And 4 more posts are pending...

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RECENT COMMENTS

There's a reason we miss `write_exact` and `read_exact` from the standard library. In fact, I am surprised the chunk is actua...

By Pyth0n on Challenge: What does this code do?
kpvleeuwen, I agree, unfortunately I don't have anyone to ask off the top of my head. Thanks, I fixed the headers.

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It could be interesting to reach out to storage firmware developers and ask what write patterns they think would be useful ex...

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Unrelated, but the `Object.assign` call can be very annoying. Any chance that the JS engine was updated to V8 and we can hav...

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