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Masakazu Matsushita matsukaz

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matsukaz / application.rb
Last active January 8, 2024 14:30
Rails connection management to handle Amazon Aurora's failover
View application.rb
module xxx
class Application < Rails::Application
config.middleware.swap ActiveRecord::ConnectionAdapters::ConnectionManagement,
matsukaz /
Last active September 27, 2021 11:07
Find a geolocation of an IP address in BigQuery

This query is to find geolocation of an IP address including latitude, longitude, city and country.

Legacy SQL doesn't support range conditions such as BETWEEN when using JOIN, so we need to filter data by WHERE. This means if IP address does not match any of the data inside geolite_city_bq_b2b, records will not be able to receive.

Use Standard SQL if you want to receive records no matter you succeed to find geolocation or not.

Please refer to the following post for more detail.

matsukaz / s3-bucket-listing.js
Created December 15, 2016 08:27
View s3-bucket-listing.js
// see)
if (typeof S3BL_IGNORE_PATH == 'undefined' || S3BL_IGNORE_PATH!=true) {
var S3BL_IGNORE_PATH = false;
if (typeof BUCKET_URL == 'undefined') {
var BUCKET_URL = location.protocol + '//' + location.hostname;
matsukaz / annotations.rb
Last active August 10, 2021 08:16
Rubyでアノテーションを実装 / Implementing java-like annotations in ruby
View annotations.rb
module Annotations
@@__last_annotation__ = nil
def annotations(meth=nil)
return @@__annotations__[meth] if meth
matsukaz / Good Developer
Last active March 4, 2021 11:02
The only way how to have happy & productive developers [DevFest CZ 2018] の要約メモ
View Good Developer
matsukaz / proguard-project.txt
Last active June 12, 2019 02:16
View proguard-project.txt
# To enable ProGuard in your project, edit
# to define the proguard.config property as described in that file.
# Add project specific ProGuard rules here.
# By default, the flags in this file are appended to flags specified
# in ${sdk.dir}/tools/proguard/proguard-android.txt
# You can edit the include path and order by changing the ProGuard
# include property in
# For more details, see
matsukaz /
Created September 19, 2018 15:59


  • こまめに話しながらコミュニケーションを取る
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matsukaz / .gitignore
Last active September 5, 2018 02:12 — forked from BennettSmith/.gitignore
Google Protobuf v2.6.0 Build Script for iOS
View .gitignore
View gist:b2871dc191f418c813886d9cfde01d3d
### Keybase proof
I hereby claim:
* I am matsukaz on github.
* I am matsukaz ( on keybase.
* I have a public key ASCBEp_cERws8a9bgyJk6TWOlgQlpLEPq8atcv--G9Ynwwo
To claim this, I am signing this object: