iOS experiencing delays when calling Parse.Cloud.run

I'm currently working on a code snippet that involves running a parse cloud function followed by processing the results. This code utilizes their javascript api (1.3.0) and is implemented in an ionic framework app. Interestingly, when executed on a Mac using Chrome browser, the response time is consistently around 500ms. However, when the same code is run on iOS devices, the performance varies significantly. It can take anywhere from 3 to 20 seconds to complete. Both the Mac and the iOS devices are connected to the same wireless network. I'm puzzled as to why there's such a discrepancy in speed between the two platforms and what steps I can take to optimize it.

var start = Date.now();
console.log("PARSE CLOUD RUN");            
Parse.Cloud.run('getFixtures', {teamID : teamID, divisionID : divisionIDs}, {
    success: function(response) {
        console.log("PARSE CLOUD SUCCESS :" + (Date.now() - start));
javascriptiosparse-platform

Answer №1

There is an effective solution to managing this scenario more efficiently. Utilizing Parse query's built-in caching functionality can simplify the process of storing query results on disk. In the event of no network connectivity, your application can retrieve the cached result. Caching also enhances app performance by eliminating the need to fetch data from Parse every time the app is launched.

By default, caching is turned off. However, it can be easily activated with just a single line of code. Insert the following code within the queryForTable: method (after PFQuery initialization):

query.cachePolicy = kPFCachePolicyCacheThenNetwork

Parse query provides support for various cache policies. The kPFCachePolicyCacheThenNetwork policy is only one option available. This policy first retrieves data from the cache before accessing the network.

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