- What do Etcd, Consul, and Zookeeper do?
- Service Registration:
- Host, port number, and sometimes authentication credentials, protocols, versions numbers, and/or environment details.
- Service Discovery:
- Ability for client application to query the central registry to learn of service location.
- Consistent and durable general-purpose K/V store across distributed system.
- Some solutions support this better than others.
- Based on Paxos or some derivative (i.e. Raft) algorithm to quickly converge to a consistent state.
- Service Registration:
- Centralized locking can be based on this K/V store.
import javax.crypto.Cipher; | |
import java.nio.ByteBuffer; | |
import java.security.GeneralSecurityException; | |
import java.security.KeyFactory; | |
import java.security.KeyPair; | |
import java.security.KeyPairGenerator; | |
import java.security.NoSuchAlgorithmException; | |
import java.security.PrivateKey; | |
import java.security.PublicKey; | |
import java.security.SecureRandom; |
Most active GitHub users (git.io/top)
The count of contributions (summary of Pull Requests, opened issues and commits) to public repos at GitHub.com from Wed, 21 Sep 2022 till Thu, 21 Sep 2023.
Only first 1000 GitHub users according to the count of followers are taken. This is because of limitations of GitHub search. Sorting algo in pseudocode:
githubUsers
.filter(user => user.followers > 1000)
rsync (Everyone seems to like -z, but it is much slower for me)
- a: archive mode - rescursive, preserves owner, preserves permissions, preserves modification times, preserves group, copies symlinks as symlinks, preserves device files.
- H: preserves hard-links
- A: preserves ACLs
any
: magic, ill-behaved type that acts like a combination ofnever
(the proper [bottom type]) andunknown
(the proper [top type])- Anything except
never
is assignable toany
, andany
is assignable to anything at all. - Identities:
any & AnyTypeExpression = any
,any | AnyTypeExpression = any
- Key TypeScript feature that allows for [gradual typing].
- Anything except
unknown
: proper, well-behaved [top type]- Anything at all is assignable to
unknown
.unknown
is only assignable to itself (unknown
) andany
. - Identities:
unknown & AnyTypeExpression = AnyTypeExpression
,unknown | AnyTypeExpression = unknown
- Anything at all is assignable to
- Prefer over
any
whenever possible. Anywhere in well-typed code you're tempted to useany
, you probably wantunknown
.
The following recipes are sampled from a trained neural net. You can find the repo to train your own neural net here: https://github.com/karpathy/char-rnn Thanks to Andrej Karpathy for the great code! It's really easy to setup.
The recipes I used for training the char-rnn are from a recipe collection called ffts.com And here is the actual zipped data (uncompressed ~35 MB) I used for training. The ZIP is also archived @ archive.org in case the original links becomes invalid in the future.
#!/usr/bin/env python | |
""" | |
Print (and write to JSON file) system information in a cross-platform manner. | |
Output contains information about platform, BIOS, CPU, memory, disk, GPU, network, peripheral devices, installed | |
packages, motherboard and users. | |
This script heavily relies on psutil and some other bash/powershell commands. See requirements.txt for dependency list. |
#!/usr/bin/env bash | |
# Documentation | |
# https://docs.gitlab.com/ce/api/projects.html#list-projects | |
NAMESPACE="YOUR_NAMESPACE" | |
BASE_PATH="https://gitlab.example.com/" | |
PROJECT_SEARCH_PARAM="" | |
PROJECT_SELECTION="select(.namespace.name == \"$NAMESPACE\")" | |
PROJECT_PROJECTION="{ "path": .path, "git": .ssh_url_to_repo }" |
"""Short and sweet LSTM implementation in Tensorflow. | |
Motivation: | |
When Tensorflow was released, adding RNNs was a bit of a hack - it required | |
building separate graphs for every number of timesteps and was a bit obscure | |
to use. Since then TF devs added things like `dynamic_rnn`, `scan` and `map_fn`. | |
Currently the APIs are decent, but all the tutorials that I am aware of are not | |
making the best use of the new APIs. | |
Advantages of this implementation: |
# application.yml file of the config server (Spring Cloud Config Server) | |
server: | |
port: 9999 # or whatever | |
spring: | |
application: | |
name: config-service | |
cloud: | |
config: | |
server: | |
git: |