Cassandra is supposed to be blisteringly fast for writes. My 25mil record insert is still running from overnight. So, yea...this learning curve will be steper than I want. (Actually, I think it's the python client that's slow?)
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Minimal information: check Broken links to further resources: check https://docs.datastax.com/en/developer/python-driver/3.18/performance/ …
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Replying to @generativist
Sorry to hear that- I've passed your feedback along to our Docs team. If you're still having trouble, you can ask the experts on our Community site ↓ https://community.datastax.com/index.html
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Replying to @DataStax
Thanks! I found what I needed (https://docs.datastax.com/en/developer/python-driver/3.19/api/cassandra/concurrent/ …). This is the sparse page with broken links (https://docs.datastax.com/en/developer/python-driver/3.19/performance/ …)
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Replying to @DataStax
Also for background: I am a cassandra newb, so I don't really can't navigate the docs well yet. At the same time, I'm a newb who was momentarily unimpressed with write performance, which was a risky moment for me sticking around.
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Replying to @generativist @DataStax
Fast write performance is one of the core tenants of
#apachecassandra and has been proven many times over the years. My gut feel is something is off (data model, disk, etc...?) if writes are slow. Maybe post your question here -> https://community.datastax.com to get an expert answer.1 reply 0 retweets 2 likes -
BTW, which docs are you using? Feel free to PM me. I'm happy to see if I can help.
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💥 (wannabe) Ƀreaker of (the Bad) Loops 💫 Retweeted 💥 (wannabe) Ƀreaker of (the Bad) Loops 💫
Thank you, David! I think I got a handle on it, now. I was doing a single, sync Python injector. Execute concurrent got me up to 6000 inserts per second without thinking about it anymore. (Gonna compare to CSV time later, too.)https://twitter.com/generativist/status/1174712653937139712 …
💥 (wannabe) Ƀreaker of (the Bad) Loops 💫 added,
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Replying to @generativist @DataStax
Ok, great. Glad you were able to figure it out. Async FTW! Feel free to reach out if you ever need to.
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Thank you. I'll try to use the forums to leave good breadcrumbs, but if I can't...expect a DM :)
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