alesmenzel

Stuff I wish I'd known sooner about service workers

I recently had several days of extremely frustrating experiences with service workers. Here are a few things I've since learned which would have made my life much easier but which isn't particularly obvious from most of the blog posts and videos I've seen.

I'll add to this list over time – suggested additions welcome in the comments or via twitter.com/rich_harris.

Use Canary for development instead of Chrome stable

Chrome 51 has some pretty wild behaviour related to console.log in service workers. Canary doesn't, and it has a load of really good service worker related stuff in devtools.

alesmenzel

Simple removal of debug module

Common usage of the debug module is for development and then disable it in production (usually also have a separate logger for production issues). Thus the code is shipped without a purpose and also it can have some perf. implication. E.g. imagine you log some big object debug('Some big object', JSON.stringify(largeObject). The JSON.stringify runs even if we disable the module, waisting precious resources - the correct usage of the module is to use formatters, e.g debug('Some big object %o', largeObject), but i have rarely seen someone use it. To avoid this common pitfalls, we can remove the debug module from our code completely - saving bundle size and performance.

Example:

https://astexplorer.net/#/gist/1652612fd62624282390aa74883beeb8/9c46a23a73496cea19d550f3a45ee8d335988054

How to use

alesmenzel

The standard names for indexes in PostgreSQL are:

{tablename}_{columnname(s)}_{suffix}

where the suffix is one of the following:

• pkey for a Primary Key constraint;
• key for a Unique constraint;
• excl for an Exclusion constraint;
• idx for any other kind of index;

alesmenzel

For those that want to keep the YTS going (No, IDGAF about people that don't care for YTS quality) get HandbrakeCLI https://handbrake.fr/downloads... and use the following settings:

user@user:~$HandBrakeCLI -i /file/input.mp4 -o /file/out.mp4 -E fdk_faac -B 96k -6 stereo -R 44.1 -e x264 -q 27 -x cabac=1:ref=5:analyse=0x133:me=umh:subme=9:chroma-me=1:deadzone-inter=21:deadzone-intra=11:b-adapt=2:rc-lookahead=60:vbv-maxrate=10000:vbv-bufsize=10000:qpmax=69:bframes=5:b-adapt=2:direct=auto:crf-max=51:weightp=2:merange=24:chroma-qp-offset=-1:sync-lookahead=2:psy-rd=1.00,0.15:trellis=2:min-keyint=23:partitions=all

Reason to use CLI over GTK has to do with lack of support for advanced settings for Handbrake GTK

** Don't Re-encode already shitty encodes...get good source!**