Glossary Index

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Showing 1–50 of 54 terms.
L
54 terms
Lamport Timestamp
A logical timestamp that respects causal precedence without fully identifying which events are concurrent.
Largest Contentful Paint (LCP)
The Largest Contentful Paint (LCP) performance metric provides the render time of the largest image or text block visible within the viewport, recorded from when the page first begins to load.
Last-Writer-Wins Register
A replicated value that resolves conflicts by choosing the write ranked latest under a deterministic ordering.
Latency
Latency is the network time it takes for a requested resource to reach its destination.
Layout mode
A layout mode, sometimes called layout, is a CSS algorithm that determines the position and size of element boxes based on the way they interact with their sibling and ancestor boxes.
Layout viewport
The layout viewport is the viewport into which the browser draws a web page.
Lazy load
Lazy loading is a strategy that delays the loading of some assets (e.g., images) until they are needed by the user based on the user's activity and navigation pattern; typically, these assets are only loaded when they are scrolled into view.
Leading
In typography, leading is an amount of space included above and below text to provide spacing between lines.
left
The left CSS property participates in specifying the horizontal position of a positioned element.
letter-spacing
The letter-spacing CSS property sets the spacing between text characters.
Leveled Compaction
An LSM compaction policy that organizes files into levels to reduce overlapping data and read work.
LGPL
LGPL (GNU Lesser General Public License) is a free software license published by the Free Software Foundation.
License Activation
License activation associates a purchased software entitlement with a particular installation or environment.
License Deactivation
License deactivation removes an installation's association with a software entitlement according to the licensing system's rules.
License Entitlement
A license entitlement is the set of rights or services a customer's purchased plan grants in the seller's licensing system.
License Renewal
License renewal extends a time-limited software entitlement according to the purchased plan.
lighting-color
The lighting-color CSS property defines the color of the light source for the feDiffuseLighting and feSpecularLighting SVG lighting filter primitives within an SVG filter.
line-break
The line-break CSS property sets how to break lines of Chinese, Japanese, or Korean (CJK) text when working with punctuation and symbols.
line-clamp
The line-clamp CSS property allows limiting of the contents of a block to the specified number of lines.
line-height
The line-height CSS property sets the height of a line box in horizontal writing modes.
Linearizability
A consistency guarantee that makes operations appear atomic and preserves their real-time order.
links_add_target()
links_add_target(): Adds a target attribute to all links in passed content.
list-style
The list-style CSS shorthand property allows you to set all the list style properties at once.
list-style-image
The list-style-image CSS property sets an image to be used as the list item marker.
list-style-position
The list-style-position CSS property sets the position of the ::marker relative to a list item.
list-style-type
The list-style-type CSS property sets the marker (such as a disc, character, or custom counter style) of a list item element.
Literal
Literals represent values in JavaScript.
Little’s Law
The queueing relation L = lambda × W connecting average work in a system, arrival rate, and time spent there.
Load Shedding
Deliberately rejecting selected work during overload to preserve useful processing capacity.
load_muplugin_textdomain()
load_muplugin_textdomain(): Loads the translated strings for a plugin residing in the mu-plugins directory.
load_textdomain()
load_textdomain(): Loads a .mo file into the text domain $domain.
Locale
Locale is a set of language- or country-based preferences for a user interface.
Localization
Localization (l10n) is the process of adapting a software user interface to a specific culture.
locate_block_template()
locate_block_template(): Finds a block template with equal or higher specificity than a given PHP template file.
Location.ancestorOrigins
The ancestorOrigins read-only property of the Location interface is a static DOMStringList containing, in reverse order, the origins of all ancestor browsing contexts of the document associated with the given Location object.
Location.assign()
The assign() method of the Location interface causes the window to load and display the document at the URL specified.
Location.reload()
The reload() method of the Location interface reloads the current URL, like the Refresh button.
Lock Convoy
A performance problem where queued threads repeatedly incur scheduling overhead behind a contended lock.
Logical properties
CSS logical properties provide a way to lay out content based on the document's writing mode and direction rather than the physical dimensions of the viewport.
Long task
A long task is a task that takes more than 50ms to complete.
Loop
A loop is a sequence of instructions that is repeated until a certain condition is met.