number could represent. However, when working with applications where you need exchange data with
JSON format, the
bigint values become a problem because
JSON does not know how to serialize
bigint values by default, in such cases, one solution is to convert the
string as this post shows.
Following Upgrade socket.io from v2 to v3, this post is about upgrading
socket.io and its associated packages to the latest versions as of when this post is written and the only setting changes seem to be from the
redis-adapater and the way to import client
io this time (for our specific use case).
socket.io and its related libraries such as socket.io-redis-adapter and socket.io-redis-emitter had a few breaking changes in either functions or behaviors since v3 which might cause issues during the v2-to-v3 migration. This post lists what was encountered and how to solve it for specific use cases based on hands-on experience.
Ever wonder where ruby’s
defined? is defined? Because it looks so like a method, you might end up trying to check out a bunch of places, such as:
BasicObject, or even
Module, but only to find no luck locating it in any of such places. Well, only until you’ve realized it, the answer is pretty simple:
defined? is not a method but an operator or a keyword.
In rails apps among the commonly-used two popular web servers, unicorn serves requests with worker processes, while puma can do it with both process workers and threads. Therefore, switching to puma from unicorn can not only help improve concurrency but also reduce memory usage. Plus, since rails 5.0, the default web server used is puma.
With a gem called activerecord-import, importing a huge amount of records into mysql table becomes an easier task to do, and this post demonstrates how to achieve it.
Upgrading application rails version from
5.1 is easier than doing from 4.2 to 5.0, since it’s only a minor version update. However, there might still be quite a few things to address either from framework changes or due to outdated gems dependency.
RSpec is a popular test framework in ruby.