wolf550e

26 ms·

241.
by wolf550e 6y ago
You basically only need to know one thing to answer all your questions: use EXPLAIN PLAN. Postgresql has "explain analyze", which is even better than simple "explain", but all SQL databases have "explain", beca
242.
by wolf550e 6y ago
To revoke the token, the server deletes it from the database. If you have the token, you can ask the server to delete it from the database. The cryptographically secure way to generate it is to read 32 bytes from getrandom(2) or from /
243.
by wolf550e 6y ago
There is no difference. SSL was invented by Netscape, when they brought it to IETF to get standardized Microsoft did not want to use a name Netscape has advertised, so they forced a name change. Thus "SSL 3.1" (IETF update to SSL
244.
by wolf550e 6y ago
No. A mainframe is not a supercomputer. You can get more cores, more dram, more iops for less money if you don't need high reliability in a single machine (because your software handles nodes failing) and if you don't need compati
245.
by wolf550e 6y ago
AFAIK Go has a GC you can't avoid, so it's not very suitable for embedded or realtime.
246.
by wolf550e 6y ago
chacha8 (chacha20 but with fewer rounds) seeded with either a deterministic seed or from /dev/urandom (depending on what you need) is a perfectly fine PRNG, and should run at 4 GB/sec on a single core, which is plenty. Only 7
247.
by wolf550e 6y ago
Suppose you want to defeat a "Reflections on Trusting Trust" attack and bootstrap a toolchain source code you believe is clean to produce binaries that are clean. You need to compile llvm/clang (or gcc). You start with someth
248.
by wolf550e 6y ago
'malinens doesn't have the storage space to store an index over a column if all values in the column are indexed. They want to index only some values, but not others. This feature does not exist in MySQL.
249.
by wolf550e 6y ago
Altering table online without using pt-online-schema-change doesn't help if they want an index that covers only some of the keys but not others.
250.
by wolf550e 6y ago
The non-consensus outsiders who make progress have done the reading. They know what the consensus is, they know all the concepts and the jargon, and they disagree about something. Your post can be interpreted to mean "my ignorance is j
251.
by wolf550e 6y ago
Google snappy is same class as lzo and lz4, not same class as brotli and zstd.
252.
by wolf550e 6y ago
You can see SpaceX cleaned some surfaces from flown boosters to inspect welds: https://twitter.com/wikkit/status/1353354797127245825 https://twitter.com/RDAnglePhoto/status/13537641050400
253.
by wolf550e 6y ago
That's a version of python that does not send SNI when opening TLS connections, so sites that don't have a dedicated IP address for the domain cannot support TLS with such clients, and most sites that do have a dedicated IP addres
254.
by wolf550e 6y ago
dang, can you please change the URL from the blog to the specific article and add "(2020)"?
255.
by wolf550e 6y ago
Both gzip and bzip2 are very old. You should use zstd.
256.
by wolf550e 6y ago
You should try zstd, it often beats xz. xz beats zstd only in high compression scenarios (-9).
257.
by wolf550e 6y ago
She's a mechanical engineer who worked in aerospace before joining SpaceX (and was considering leaving the industry because old space sucks), so technically she is more qualified than Musk (a physicist and economist who worked on super
258.
by wolf550e 6y ago
See Aleksey Shipilёv on JVM method dispatch: https://shipilev.net/blog/2015/black-magic-method-dispatch/
259.
by wolf550e 6y ago
To match the original zlib/gzip stream, it needs to match the exact hash table and parsing algorithm used by the exact zlib implementation used originally, to choose the same matches. It would not do to use a stronger deflate compresso
260.
by wolf550e 6y ago
s/decompressed/recompressed/g
261.
by wolf550e 6y ago
Thomas believes cryptography should be done by experts and reviewed by experts, but not decided by committee.
262.
by wolf550e 6y ago
play in a Faraday cage
263.
by wolf550e 6y ago
Lots of old code exists though.
264.
by wolf550e 6y ago
JavaCcript setTimeout is used for animations.
265.
by wolf550e 6y ago
https://en.wikipedia.org/wiki/Dead_Hand
266.
by wolf550e 6y ago
Note that the common AEAD modes, AES-GCM and ChaCha20-Poly1305, are CTR + MAC. The most common style of MAC is Carter Wegman MAC, the second most common is CCM and EAX and the like, after that HMAC. Nothing new uses CBC or CFB or OFB or any
267.
by wolf550e 6y ago
All your DH shares don't match the certificate type already because you use ECDH with either NIST P-256 or X25519 and you likely use an RSA certificate. The two asymmetric systems (one for key exchange and one for authentication) have
268.
by wolf550e 6y ago
SpaceX is ridiculously successful. The Falcon 9 and Falcon Heavy are now as reliable as the best competitors and are so much cheaper than their competitors it's not even funny. SpaceX didn't lower Falcon 9 launch prices because th
269.
by wolf550e 6y ago
I guess someone has an optimized function for this which is faster than the one that comes with the compiler.
270.
by wolf550e 6y ago
Your arithmetic / unit conversion doesn't work. Change of 3.5°F is same as change of 1.94°C, not 1.2°C. Change of 28°F is 15.5°C. 37.7 - 22.2 != 9.6. (Water freezing to boiling is 100 degrees in C and 180 degrees in F).

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