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SQL is slow for analysis but use dplyr

SQL is slow for analysis but use dplyr There goes that idea but could this be done with Redis? https://blog.exploratory.io/why-sql-is-not-for-analysis-but-dplyr-is-5e180fef6aa7#.nfciyobza Join my FREE newsletter to learn more about R with automated trading NOTE I now post my TRADING ALERTS into my personal FACEBOOK ACCOUNT and TWITTER. Don’t worry as I don’t post stupid cat videos …

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Std C++ streaming fast or slow

Std C++ streaming fast or slow I heard from the last posting it was slow thanks to a Facebook group comment http://www.codeproject.com/Articles/1113332/Streaming-with-Cplusplus-is-brilliant Join my FRE newsletter to see how C++ can help in automated trading NOTE I now post my TRADING ALERTS into my personal FACEBOOK ACCOUNT and TWITTER. Don’t worry as I don’t post …

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Slow stat arb definite future of HFT shops?

Slow stat arb definite future of HFT shops? An oxymoron I know by that statement but Manoj Nerang’s new HFT firm shall focus on this. He was the guy who founded Tradewerx From a few weeks ago https://quantlabs.net/blog/2016/03/slow-stat-arbitrage-strategy-next-frontier-for-hft-shops/ My Phase 1 in my “Indie Algo Trading Business in Python” course series focuses exactly on this! …

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Java JNI slow but Redis batch fast

Java JNI slow but Redis batch fast After various conversations online, it was agreed with the following: I had to confirm this stack for where Java JNI is slow for a C process. http://stackoverflow.com/questions/819536/how-to-call-java-function-from-c http://docs.oracle.com/javase/6/docs/technotes/guides/jni/spec/invocation.html We agree using Redis batch is a much better option: http://redis.io/topics/mass-insert Remember I have the C and Java components for …

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Is CQG considered useless to dropping feed and slow connectivity?

Is CQG considered useless to dropping feed and slow connectivity? This came in from a newsletter subscriber: CQG were hopeless. Their datafeed API is COM and kept dropping. We found problems in their datacentre with servers dropping our connection due to slow connectivity. They told us they’d fixed only for them to recur. Unusable Comments …

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Is SQL really too slow for real time market data with equity, forex, and options? Even complex event processing?

Is SQL really too slow for real time market data with equity, forex, and options?  Even complex event processing? From a Youtube visitor To:Bryan Downing SQL is too slow to handle options tick data if that’s the road you’re headed down. Something you might want to test out before you get too deeply involved. Options …

Is SQL really too slow for real time market data with equity, forex, and options? Even complex event processing? Read More »

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