pesterhazy

This gist lists challenges you run into when building offline-first applications based on IndexedDB, including open-source libraries like Firebase, pouchdb and AWS amplify (more).

Note that some of the following issues affect only Safari. Out of the major browsers, Chrome's IndexedDB implementation is the best.

Backing file on disk (WAL file) keeps growing (Safari)

When this bug occurs, every time you use the indexeddb, the WAL file grows. Garbage collection doesn't seem to be working, so after a while, you end up with gigabytes of data.

Random exceptions when working with a large number of indexeddb databases (Safari)

desandro

I'm having trouble understanding the benefit of require.js. Can you help me out? I imagine other developers have a similar interest.

From Require.js - Why AMD:

The AMD format comes from wanting a module format that was better than today's "write a bunch of script tags with implicit dependencies that you have to manually order"

I don't quite understand why this methodology is so bad. The difficult part is that you have to manually order dependencies. But the benefit is that you don't have an additional layer of abstraction.

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TooTallNate

Why is Node async?

• Asynchronous code is how you write low-resource, high-concurrency servers. See http://www.kegel.com/c10k.html.
• Node embracing async from the get-go means that servers are low-resource, high-concurrency by default.
• Async + JavaScript = Perfect fit for an event loop.
• When it comes to threads vs event-loop, there are times when either are advantageous.
  • But there are things very hard or impossible to do with threads.
  • WebSockets are difficult to do properly with threads. That's one example where non-blocking IO (async) has a major advantage.
  • RAM usage is another factor, especially when we're talking about the physical hardware required to run your application, which translates to real dollars.
• It depends on your application in the end: