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cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccclcccclccllccclclllllllllllllllllllllllllllllllllllllllllclllllllllllllllllllllllllllllllllllllllllllllllllc:l,'..;;c.;,cc;:';c:lllllllllllllllllllllllllllllllllllll cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccllcccccllccccccccllllllllllllllllllllllllllllllllllllllccllllllllllllllllllllllllllllllllllllllllllllllllllc:'.':,.c: .cccllc'';lllllllllllllllllllllllllllllllllllll cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccllccccccccccccclcllllllllllllllllllllllllllllllllllccllllllllllllllllllllllllllllllllllllllllllllllllllll;.:cl:lc.;.:.;lllll.'lllllllllllllllllllllllllllllllllllll 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cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccllccccccccccccclllllllllllllllllllllllllllllllllllcllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll;cc,'.';:o.:;,:,,',c;looooolooolooooollollllllllllllllllll ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccllccccccccccccccclllllllllllllllllllllllllllllllllcclllllllllllllllllllllllllllllllllllllllllllllllllllllllllllooo;l,':c;;c, .cl:llc,;;looooooooooooooollollllllllllllllllll cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccllclccllllllllllllllllllllllllllllllllllcllllllllllllllllllllllllllllllllllllllllllllllllllllllloooloooll.',;,',,.' .',;:::;' coooooooooooooooooooolloolooooolooool cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccllllllllllllllllllllllllllllllllllllclllllllllllllllllllllllllllllllllllllllllllllllllllllllolollllcc:. .,.,;lo;' ,',llllc' .:loooooooooooooooooooooooooooooooooo cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccclllclllllllllllllllllllllllllllllllllllcclllllllllllllllllllllllllllllllllllllllllllllllllllllllool:;,,,;::l''';';,,:. .c;.loo,.'colcclooooooooooooooooooooooooooooooo cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccllllllllllllllllllllllllllllllllllllllcclllllllllllllllllllllllllllllllllllllllllllllllll:,',::,,,',,.;:::loo'l'.c';l;, ',;'.:,;l;:oooolcccoooooooooooooooooooooooooooo cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccclllllllllllllllllllllllllllllllllllllllllcclllllllllllllllllllllllllllllllllllllllllllc;,',',;, . ...',,,;',;,,;'c;..',.cl :l:c..'::'.;ccccc::..:lllllllllllllllllllllllll cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccllccccccllllllllllllllllllllllllllllllllllllllllccllllllllllllllllllllllllllllllllllllllllll,.'',.'''. ......,,...'.....'..'....... ........'. .oooool;.,:c::ooooooooooooooooooolll cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccclllllccccllllllllllllllllllllllllllllllllllllllccllllllllllllllllllllllllllllllllllllllllllll;:lc:';;;'...,';;;,,;.',::;''.. ......c;, ,,cl:cc'',.'';cc,.;..,;;.,::cllllllllllllllllll cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccllllccccllllllllllllllllllllllllllllllllllllllllccllllllllllllllllllllllllllllllllllllllllllllll,.';..looool'cc:;,;;'.,:llll:c;.,.';.. . ;:;oooc,''lc,...,;cloocccoolcclooooooooooooooo ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccllcllllllllllllllllllllllllllllllllllllllllllllllcclllllllllllllllllllllllllllllllllllllllllllllll;..,..clooool,cllooooocc:;''''...;;'...... . .,...'.. ,cc'':';:lococ:oddool::loddooodooooo cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccclllllllllllllllllllllllllllllllllllllllllllllcclllllllllllllllllllllllllllllllllllllllllllllll:.....;looooool,coooooooooooooooc. ''''.;;.. . ''.,''. ,;,.',':c:',ll:ddolllo:lccloodddddoo cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccclcccccccclcclclcclllllllllllllllllllllllllllllllllllllllllllllclllllllllllllllllllllllllllllllllollllllllllllc:'.''..coooooooll;coooooooooooooooo,;.,;:c';;. '. ... . ,,..,'. .'....;cloooo:odlc:cloooooo ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccclcllcllllllcllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllolllollllll,'.....:,looooolooo:;oooooooooooooooo,ol. ',l:., ';cc. ..,'. ..'.',.cc:c.:;..';;,.::,,,;;',,;;; ccccccccccccccccccccccccccccccccccccccccccccccccccclccccccccccccccccccccccccccllllllllllllllllllllllllllllllllllllllllllllllllllllllllcllllllllllllllllllllllllllllllllllllloooooooooc:'. ..',cl,loolloooooc,oooooooooooooood'llc. ..,oo :d;..; .c:.;:'..;;;;::,;.::::',,::';:::::,lolcl ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccclcclllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllloooooooooo:c;..;,;ccol,clloooooool,oooooooooooddodd'ol'...';;: .',o;,:'.;,,odccdddolcc;';:;;c:c,,';cccc:'...', ccccccccccccccccccccccccccccccccccccccccccccccccccccccccclllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllloololoooooooooooooooolll::.,':ooool::oooooooooo;looooooooooodddo.:..:cc..o; :o;ldl'. :dd:cdddddddo:dddlccccc'......,;;,c: cccccccccccccccccccccccccccccccccccccccccccccccccccccccclllccclllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllooooooooloooooooooooooooooooooollllcl:;::loollol;oooooooooo;loooooodoooodddl 'lloldd;.. 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The Invoice Page That Took 4 Seconds to Search
In Polaris, the POS system I built for retail shops, the invoice page has a product search bar. A cashier types a product name, results appear, they click to add it to the invoice. Simple. Except it wasn’t. Every keystroke fired an API call. On a shop with 500 products, search took 3-4 seconds because each request hit the database, serialized the response, and traveled back over the network. Cashiers were waiting on every single search. During rush hours, this was painful. ...