/biz/ - Business & Finance

Every industry is over saturated. Just find a niche and be really good at what you do.

>>51434740
>What is the advantage of BSON? Is it better for reads or writes?
Binary format is more compact than json/xml/csv/etc, so advantageous for writes, ie save on storage. Advantageous for reads as well because it's faster to parse large datasets.

>Columnar vs row db advantages?
Columnar: makes most sense for large datasets and read only queries. If access pattern only reads a handful of columns at a time then it's wasteful to read and parse all of those additional columns from every row into memory, especially if the table contains hundreds of columns, so columnar helps here. Furthermore, columnar data is very well suited to compression because of single datatype across down one column. Downside is insertions/deletions/etc are much more difficult.

Row: makes sense for transactional access patterns where reads/insertions/updates/deletes are frequent and only a small number of records are needed to be loaded from disk at a time.

>Query slow in RDS, wit do?
idk, never used this before

>Why lazy load in java 8 streams?
never used java, but streams in generally are potentially unbounded (could be over a network, filesystem, etc). If the entire stream was exhausted and loaded into memory at once you could be OOM

>Does .net have a memcache?
idk .net

>What is a closure in js
lol, inner functions have access to the symbols in the namespace of the outer function

>>51435976
>you are niche and competing with phds
even phds aren't making it these days, pic related