The Curious Case of the Shallow Session SPAs
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Buried at the end of this year's instalment of my semi-annual series on network and device reality is a mystery: multiple, independent data sets from the Web Performance community indicate sites built as Single-Page Applications ("SPAs") receive, on average, only one (1) "soft navigation" for every

Most SPAs seem to only serve one or two ‘soft’ navigations after the initial ‘hard’ navigation (the one that loads the entire app upfront), meaning the cost is not being amortized across many requests, negating the whole point of the architecture.