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Javascript Online Cache Simulator

Simple and easy to use cache simulator that shows how computers use cache memory behind the scene.

How to run

  1. Open the index.html file in your browser.
  2. Read the help.pdf file carefully.
  3. Go back to your browser and enjoy playing with the Simulator :)

Learn more

If you're interested in knowing more about the algorithms used in the simulator and their comparison, read the analysis.pdf documentation.

About

a JavaScript Client-side Cache Simulator

Topics

cache-simulatorjavascriptjavascript-clientjqueryjs

Resources

Readme
GPL-3.0 license
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Stars

2 stars

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2 watching

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1 fork
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, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
 blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
GitHub - ammoradi/cache-simulator: a JavaScript Client-side Cache Simulator · GitHub
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Repository files navigation
Javascript Online Cache Simulator
Simple and easy to use cache simulator that shows how computers use cache memory behind the scene.
How to run
  1. Open the index.html file in your browser.
  2. Read the help.pdf file carefully.
  3. Go back to your browser and enjoy playing with the Simulator :)
Learn more
If you're interested in knowing more about the algorithms used in the simulator and their comparison, read the analysis.pdf documentation.
About
a JavaScript Client-side Cache Simulator
Topics
cache-simulatorjavascriptjavascript-clientjqueryjs
Resources
Readme
GPL-3.0 license
Activity
Stars
2 stars
Watchers
2 watching
Forks
1 fork
Report repository
Releases
Packages
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - ammoradi/cache-simulator: a JavaScript Client-side Cache Simulator · GitHub
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Repository files navigation
Javascript Online Cache Simulator
Simple and easy to use cache simulator that shows how computers use cache memory behind the scene.
How to run
  1. Open the index.html file in your browser.
  2. Read the help.pdf file carefully.
  3. Go back to your browser and enjoy playing with the Simulator :)
Learn more
If you're interested in knowing more about the algorithms used in the simulator and their comparison, read the analysis.pdf documentation.
About
a JavaScript Client-side Cache Simulator
Topics
cache-simulatorjavascriptjavascript-clientjqueryjs
Resources
Readme
GPL-3.0 license
Activity
Stars
2 stars
Watchers
2 watching
Forks
1 fork
Report repository
Releases
Packages
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - ammoradi/cache-simulator: a JavaScript Client-side Cache Simulator · GitHub
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Repository files navigation
Javascript Online Cache Simulator
Simple and easy to use cache simulator that shows how computers use cache memory behind the scene.
How to run
  1. Open the index.html file in your browser.
  2. Read the help.pdf file carefully.
  3. Go back to your browser and enjoy playing with the Simulator :)
Learn more
If you're interested in knowing more about the algorithms used in the simulator and their comparison, read the analysis.pdf documentation.
About
a JavaScript Client-side Cache Simulator
Topics
cache-simulatorjavascriptjavascript-clientjqueryjs
Resources
Readme
GPL-3.0 license
Activity
Stars
2 stars
Watchers
2 watching
Forks
1 fork
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
GitHub - ammoradi/cache-simulator: a JavaScript Client-side Cache Simulator · GitHub
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README.md
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Repository files navigation
Javascript Online Cache Simulator
Simple and easy to use cache simulator that shows how computers use cache memory behind the scene.
How to run
  1. Open the index.html file in your browser.
  2. Read the help.pdf file carefully.
  3. Go back to your browser and enjoy playing with the Simulator :)
Learn more
If you're interested in knowing more about the algorithms used in the simulator and their comparison, read the analysis.pdf documentation.
About
a JavaScript Client-side Cache Simulator
Topics
cache-simulatorjavascriptjavascript-clientjqueryjs
Resources
Readme
GPL-3.0 license
Activity
Stars
2 stars
Watchers
2 watching
Forks
1 fork
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - ammoradi/cache-simulator: a JavaScript Client-side Cache Simulator · GitHub
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Repository files navigation
Javascript Online Cache Simulator
Simple and easy to use cache simulator that shows how computers use cache memory behind the scene.
How to run
  1. Open the index.html file in your browser.
  2. Read the help.pdf file carefully.
  3. Go back to your browser and enjoy playing with the Simulator :)
Learn more
If you're interested in knowing more about the algorithms used in the simulator and their comparison, read the analysis.pdf documentation.
About
a JavaScript Client-side Cache Simulator
Topics
cache-simulatorjavascriptjavascript-clientjqueryjs
Resources
Readme
GPL-3.0 license
Activity
Stars
2 stars
Watchers
2 watching
Forks
1 fork
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - ammoradi/cache-simulator: a JavaScript Client-side Cache Simulator · GitHub
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Repository files navigation
Javascript Online Cache Simulator
Simple and easy to use cache simulator that shows how computers use cache memory behind the scene.
How to run
  1. Open the index.html file in your browser.
  2. Read the help.pdf file carefully.
  3. Go back to your browser and enjoy playing with the Simulator :)
Learn more
If you're interested in knowing more about the algorithms used in the simulator and their comparison, read the analysis.pdf documentation.
About
a JavaScript Client-side Cache Simulator
Topics
cache-simulatorjavascriptjavascript-clientjqueryjs
Resources
Readme
GPL-3.0 license
Activity
Stars
2 stars
Watchers
2 watching
Forks
1 fork
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
GitHub - ammoradi/cache-simulator: a JavaScript Client-side Cache Simulator · GitHub
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LICENSE
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README.md
help.pdf
help.pdf
index.html
index.html
Repository files navigation
Javascript Online Cache Simulator
Simple and easy to use cache simulator that shows how computers use cache memory behind the scene.
How to run
  1. Open the index.html file in your browser.
  2. Read the help.pdf file carefully.
  3. Go back to your browser and enjoy playing with the Simulator :)
Learn more
If you're interested in knowing more about the algorithms used in the simulator and their comparison, read the analysis.pdf documentation.
About
a JavaScript Client-side Cache Simulator
Topics
cache-simulatorjavascriptjavascript-clientjqueryjs
Resources
Readme
GPL-3.0 license
Activity
Stars
2 stars
Watchers
2 watching
Forks
1 fork
Report repository
Releases
Packages
Contributors
Languages