167 posts
The last post covered Spring Boot back-end optimization and technology choices. This one is about front-end page performance optimization, mainly targeting the criteria Google publishes. Baidu's white paper isn't included.
The last post covered buying and configuring the server. This one is about Spring Boot optimization and technology choices: I switched to the more efficient FreeMarker, added Redis caching, added performance statistics, and added GitHub Actions workflows.
After upgrading to a newer Druid, the logs kept throwing errors: discard long time none received connection., jdbcUrl: blah blah. The program ran fine, but staring at a wall of errors is unbearable, so I went into their source to see what was actually going on.
Regarding this outage, some netizens claimed that, due to the pandemic, servers in various regions had been stolen. However, this claim has now been debunked — it was just a Photoshopped image.
Yesterday GitHub suffered a large-scale outage. Microsoft responded that, due to the pandemic, servers in various regions had been stolen. Microsoft also said it is doing everything it can to recover the servers and hopes to retrieve the servers and data as soon as possible.
GitHub Actions is a continuous integration service launched by GitHub in October 2018. I used Travis CI before; yesterday I tried GitHub Actions and found it more powerful with more to play with, so I'll share my first impressions.
Why do I say don't over-rely on or blindly trust unit tests? It starts with a merge request. GitHub's Dependabot keeps your application secure and always up to date, meaning it automatically creates merge requests to change my Maven dependency versions. And so the story begins.
Download sites were very popular several years ago, but because bandwidth and traffic were expensive, many download sites began hotlinking — visitors click download on someone else's page but use my server's traffic, causing huge bandwidth theft. So hotlink protection is a required course for download sites.
When using the IDEA development tool, sometimes a Spring project's config files application.yml or bootstrap.yml aren't recognized properly — the icon isn't the green little leaf, causing the project to fail to start. At this point we need to manually check IDEA's configuration to fix it.
When using MyBatis, IDEA prompts 'Could not autowire. No beans of 'XXXMapper' type found.' and draws a red squiggly line on the mapper class. The actual reason is that you forgot to add the @Repository annotation to the mapper.
