nerdmeeting

Object caching with Bedrock (and Trellis) using Redis

What is object caching

While nginx microcaching already solves page caching (as of static, rarely changing WordPress pages), the performance for dynamically generated pages (like WooCommerce shop pages and admin backend in general) can benefit greatly from additionally using an object cache. Object caching allows an application (in this case WordPress with its plugins, theme, etc.) to store prepared objects (mostly database queries) in a database and quickly retrieve them, therefore improving the performance of dynamic page generation. Object caching is (usually) transparent, which means that it shouldn't be noticeable by users and developers (except for the performance improvements of course).

Implementations

BedRock (WordPress) on Nginx with EC2 + RDS + S3/CloudFront

This is an organic document recorded for learning and future reference purposes.

Required reading before proceeding

Introduction

ccache is a compiler cache. It speeds up recompilation of C/C++ code by caching previous compilations and detecting when the same compilation is being done again. This often results in a significant speedup in common compilations, especially when switching between branches. This page is about using ccache on Mac with clang and ninja build system. If you want to use Xcode, please refer to the old CCacheMac page.

In order to use ccache with clang, you need to use the current git HEAD, since the most recent version (3.1.9) doesn't contain the patch needed for using chromium style plugin.

Installation

To install ccache with [homebrew](http://mxcl.

	# -- mode: ruby --
	# vi: set ft=ruby :

	@script = <<SCRIPT

	# Install php and extensions
	# PHPと拡張をインストールする
	sudo amazon-linux-extras install php7.4
	sudo ln -s /usr/bin/php /usr/local/bin/php

	# MacOS!
	# "Flattens" the structure of files in ~/Splice/ folder to ~/SpliceFlat/ folder
	# Copyright 2019 by Danko Kozar

	alias splice-flatten="find ~/Splice/ -mindepth 2 -type f -exec rsync --update --quiet '{}' ~/SpliceFlat/ ';'"

	splice () {
	echo "watching for Splice folder changes"
	splice-flatten
	while true; do sleep 5; echo "... checking..."; splice-flatten; done

	package com.example.csv;

	import com.opencsv.bean.ConverterDate;
	import com.opencsv.exceptions.CsvDataTypeMismatchException;
	import java.lang.reflect.InvocationTargetException;
	import java.time.LocalDate;
	import java.time.LocalTime;
	import java.time.format.DateTimeFormatter;
	import java.time.temporal.Temporal;
	import java.util.Locale;

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8" />
	<title>Simple Backbone WordPress Example</title>
	<link rel="stylesheet" href="base.css">
	</head>
	<body>

	<ul id="post-list"></ul>

	#!/bin/bash

	BIN=""

	if [ "$PHP" == "/usr/local/bin/php" ]
	then
	PHP=""
	fi

	BIN="/usr/local/php/$1/bin/php"

	#!/bin/bash

	function checkError {
	if [ $1 -ne 0 ]; then
	echo -e "Error in build step\n"
	exit
	fi
	}

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