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Executors.newCachedThreadPool() versus Executors.newFixedThreadPool()
...ume a non-negligible amount of memory and also increase memory consumption based on their work-in-progress, so it's quite easy to topple a server this way (unless you have other circuit-breakers in place).
The unbounded problem is exacerbated by the fact that the Executor is fronted by a Synchronous...
In MySQL queries, why use join instead of where?
...t for JOIN types other than INNER, making queries easy to use on other databases
WHERE clause only serves as filtration of the cartesian product of the tables joined
From a Design Perspective:
ANSI-92 JOIN syntax is pattern, not anti-pattern:
The purpose of the query is more obvious; the colu...
What's the difference between @JoinColumn and mappedBy when using a JPA @OneToMany association
...whichever generation you think fits your needs. If you're on a legacy database and don't want to change the structure, pick whichever matches your schema.
– Snekse
Mar 7 '17 at 16:36
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How can you debug a CORS request with cURL?
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The bash script "corstest" below works for me. It is based on Jun's comment above.
usage
corstest [-v] url
examples
./corstest https://api.coindesk.com/v1/bpi/currentprice.json
https://api.coindesk.com/v1/bpi/currentprice.json Access-Control-Allow-Origin: *
the positiv...
Why don't self-closing script elements work?
...any hours digging into bug reports and mailing lists.
HTML 4
HTML 4 is based on SGML.
SGML has some shorttags, such as <BR//, <B>text</>, <B/text/, or <OL<LI>item</LI</OL>.
XML takes the first form, redefines the ending as ">" (SGML is flexible), so that i...
What is the apply function in Scala?
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Types in Scala can usually be inferred based on the arguments, but if not you can supply them via the square brackets. so when instantiating an Average object you could say "val avg = new Average[Int](0)"
– Angelo Genovese
Ju...
What exactly is Arel in Rails 3.0?
...up question. You mentioned LDAP, AMZ, etc. above, I assume that currently (based on rails/arel on github) ARel does not have that capability, just the potential? i.e. until someone implements that part. This does sound super exciting though.
– Will
May 5 '10 at...
Serializing an object as UTF-8 XML in .NET
...e to somewhere other than to memory, such as to a file, TCP/IP stream, database, etc. All in all, it's not really that verbose.
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Should I always use a parallel stream when possible?
...isses then you wouldn't gain anything by parallelization. That's why array-based sources parallelize the best as the next indices (near the current index) are cached and there are fewer chances that CPU would experience a cache miss.
He also mentions a relatively simple formula to determine a chanc...
Why does Dijkstra's algorithm use decrease-key?
...valid distances in advance, you can build a super efficient priority queue based on that fact.
Hope this helps!
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