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Non-Relational Database Design [closed]

...HTML. (HUGE!!) For normal webapps, document/JSON-based DBs are a massive win, and the drawbacks of less flexible queries and some extra code for data validation seems a small price to pay. Have you hit your head against anything that seems impossible? Not yet. Map/reduce as a means of querying a...
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What is Cache-Control: private?

...te proxy, then all 67198 users hitting the same page in the same 15-second window will all get the same contents - all served from close cache. Performance win for everyone. The virtue of adding Cache-Control: max-age is that the browser doesn't even have to perform a conditional request. if you ...
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How does the const constructor actually work?

... const is a nice performance win for Flutter widgets according to medium.com/@mehmetf_71205/inheriting-widgets-b7ac56dbbeb1 "Use const to build your widgets Without const, selective rebuilding of the sub-tree does not happen. Flutter creates a new insta...
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What is the difference between NTFS Junction Points and Symbolic Links?

...f you're certain that that's the case in a specific environment (maybe for Windows XP or because of security settings) I'll make note of that but in my experience and from documentation (and I just confirmed on Windows 10) a junction can always target a non-existent path, even upon creation... there...
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What are the main performance differences between varchar and nvarchar SQL Server data types?

...f I need it. – E.J. Brennan Jun 26 '11 at 12:54 4 @cbmeeks: I don't code for what I don't know. B...
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Why is reading lines from stdin much slower in C++ than Python?

...atoVaughn Cato 58.3k55 gold badges7171 silver badges111111 bronze badges 148 ...
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Best practices for circular shift (rotate) operations in C++

... just uint32_t, so you could make versions for other sizes. See also a C++11 template version with lots of safety checks (including a static_assert that the type width is a power of 2), which isn't the case on some 24-bit DSPs or 36-bit mainframes, for example. I'd recommend only using the templat...
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Why do 64-bit DLLs go to System32 and 32-bit DLLs to SysWoW64 on 64-bit Windows?

...n't intended for the dlls of 64-bit systems, it's actually something like "Windows on Windows64", meaning the bits you need to run 32bit apps on a 64bit windows. This article explains a bit: "Windows x64 has a directory System32 that contains 64-bit DLLs (sic!). Thus native processes with a bitne...
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How many threads is too many?

...asure yourself. Complete measures (in French only) in Combien de fils d'exécution ?. share | improve this answer | follow | ...
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Is R's apply family more than syntactic sugar?

...ething like PVM or MPI (see Tierney's clustering page). snow has the following apply functions: parLapply(cl, x, fun, ...) parSapply(cl, X, FUN, ..., simplify = TRUE, USE.NAMES = TRUE) parApply(cl, X, MARGIN, FUN, ...) parRapply(cl, x, fun, ...) parCapply(cl, x, fun, ...) It makes sense that app...