Efficient way to troubleshoot on any systems
There's no greater frustation of trying to troubleshoot on a system for many hours (or days) while the solution was under our nose for all the time.
Ghost error update from v4 to v5 - foreign key constraint
Error
alter table `subscriptions` modify `tier_id` varchar(24) not null - Cannot change column 'tier_id': used in a foreign key constraint 'subscriptions_tier_id_foreign'
Solution on MySql
SET GLOBAL FOREIGN_KEY_CHECKS=0;
Restart your Ghost v5 instance.
Finally remember to put back
First view of Elastic Stack
Elastic stack starter kit
Easy cache your applications in Kubernetes
> There are only two hard things in Computer Science: cache invalidation and
naming things.
- Phil Karlton
Problem
How many times would you have liked caching static data that never (or at least
almost never) change? A classic example are labels to show in a front-end select
box.
Labels
Kubernetes Best Practices
Table of contents
0. Intro
1. Before to start
1.1 12 Factor
1.2 Lint your manifests
1.3 Liveness readiness
1.4 Scan container images
1.5 Do not use root user in your containers
2. Security
2.1 Use Pod Security Policies
2.2 Upgrade to the
Single-Node Patterns in distributed systems
Single-Node Patterns in distributed systems
Carrefour blockchain vs Coopchain
Durante lo sviluppo di un progetto basato su blockchain, ho esplorato due
aziende che attualmente sono le uniche (penso), in Italia, che hanno rilasciato
in produzione la tracciabilità alimentare di alcuni prodotti tramite tecnologia
blockchain.
Le due aziende di cui sto parlando sono:
* Coop (coopchain [https://www.coopchain.coop.it/