Speed up and clean shinyapp

I have Build a shinyapp that is drawing data (Currently 30k Georeferenced Records) via an API. Main purpose is to show a Tree map using leaflet. My code is working but slow. It needs refactoring and cleaning.

- do multiple api requests parallely

- update a reactive function to check if new data is available to only check the requests header and not to download the whole database set.

- review the leaflet implementation to ensure fast display

The whole project needs to be reviewed and optimised for speed. Main bottleneck is problably the API requests.

Thanks for the quality submissions. As this is the code review I did not expect those high prices. For 250 I would expect someone to build this from scratch. Correct me but I was looking to stay under 100AUD for some one to put in 2-5h of work. Attached the code for better estimates.

Thanks (
Code is on GITHUB (

Skills: API, Cartography & Maps, Data Processing, R Programming Language

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About the Employer:
( 0 reviews ) East Melbourne, Australia

Project ID: #16339772

9 freelancers are bidding on average $198 for this job


Overall, I have a good hands on working with Advanced Excel, R and Python and BI tools and technologies, AI, Big Data. I have quite a good knowledge of DL/ML Algorithm , have also developed Dashboards and Web Applica More

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Hi, This is Santhosh from India. I am a Business Management Graduate with Computer Science engineering background who is passionate about Data, Mathematics and Technology. I have worked in many data analytics pr More

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I'm an Engineer in Statistics and Applied Economics, i've got many skills and expertise that will allow me achieving perfectly all the projects and assignments because my priority is your satisfaction I am a master of More

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I know advanced R programming and I can help you with the shiny app updates. Please send me the file so that I can further help you. I have done over 100 r programming and shiny app projects. Looking forward to working More

$250 AUD in 10 days
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Hello! > do multiple api requests parallely As you probably know, it will require multiple cores, so I suppose your Shiny server is multicore. In this case, it would not be a problem with base parallel package. More

$222 AUD in 5 days
(14 Reviews)

Hi, I use R and Shiny for data analysis and visualization including geo-visualization using leaflet. I can help you optimize your code by utilizing better program constructs if not already in use, parallelizing cod More

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Hi, I hope my message finds you well. I have done many commercial projects using shiny. And I love working with leaflet. Looking forward to support you with this project. Enjoy your day, Joerg. PS: Bid is just a rough More

$99 AUD in 10 days
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I am a data scientist and R developer, with expertise in working with leaflet and R shiny, and experience of refactoring existing code. I would like to review your existing code to better understand the issue.

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I am Data Entry/Data Processing Expert who knows the value of time, very hard working and always delivers the work on time. My Motive is to make my employer happy without adding additional charges. If you are looking f More

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