SPDY

E39862

application layer protocol network protocol transport layer security enhancement

SPDY is an experimental, now-deprecated web protocol developed by Google to speed up and secure HTTP traffic, which heavily influenced the design of HTTP/2.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (2)

Label	Occurrences
SPDY canonical	5
SPDY Protocol whitepaper by Google	1

How this entity was disambiguated

This entity first appeared as the object of triple T306749 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: SPDY
Context triple: [HTTP/2, originatedFrom, SPDY]

A. QUIC
QUIC is a modern, multiplexed transport protocol developed by Google and standardized by the IETF that runs over UDP to provide faster, more secure, and reliable web connections than traditional TCP-based HTTPS.
B. HTTP/2
HTTP/2 is a major revision of the Hypertext Transfer Protocol that introduced features like multiplexing, header compression, and server push to significantly improve web performance over HTTP/1.1.
C. HTTP/3
HTTP/3 is the third major version of the Hypertext Transfer Protocol, built on the QUIC transport protocol to provide faster, more reliable, and secure web communication.
D. SCTP
SCTP (Stream Control Transmission Protocol) is a transport-layer network protocol designed to provide reliable, message-oriented communication with features like multi-streaming and multi-homing, often used for signaling and real-time data transmission.
E. HTTP
HTTP (Hypertext Transfer Protocol) is the foundational application-layer protocol used for transmitting web pages and other resources across the World Wide Web.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: SPDY
Target entity description: SPDY is an experimental, now-deprecated web protocol developed by Google to speed up and secure HTTP traffic, which heavily influenced the design of HTTP/2.

A. QUIC
QUIC is a modern, multiplexed transport protocol developed by Google and standardized by the IETF that runs over UDP to provide faster, more secure, and reliable web connections than traditional TCP-based HTTPS.
B. HTTP/2
HTTP/2 is a major revision of the Hypertext Transfer Protocol that introduced features like multiplexing, header compression, and server push to significantly improve web performance over HTTP/1.1.
C. HTTP/3
HTTP/3 is the third major version of the Hypertext Transfer Protocol, built on the QUIC transport protocol to provide faster, more reliable, and secure web communication.
D. SCTP
SCTP (Stream Control Transmission Protocol) is a transport-layer network protocol designed to provide reliable, message-oriented communication with features like multi-streaming and multi-homing, often used for signaling and real-time data transmission.
E. HTTP
HTTP (Hypertext Transfer Protocol) is the foundational application-layer protocol used for transmitting web pages and other resources across the World Wide Web.
F. None of above. chosen

Statements (51)

Predicate	Object
instanceOf	application layer protocol ⓘ network protocol ⓘ transport layer security enhancement ⓘ
basedOn	HTTP ⓘ
compressionAlgorithm	DEFLATE for header compression ⓘ
deprecatedBy	major browsers ⓘ
deprecatedIn	Google Chrome 51 and later ⓘ Mozilla Firefox 51 and later ⓘ
designGoal	to allow concurrent HTTP requests over one connection ⓘ to avoid head-of-line blocking at the HTTP layer ⓘ to minimize protocol overhead ⓘ
developer	Google ⓘ
documentation	SPDY self-linksurface differs ⓘ surface form: SPDY Protocol whitepaper by Google
feature	header compression ⓘ improved utilization of a single TCP connection ⓘ multiplexing multiple streams over a single TCP connection ⓘ reduced latency for HTTP traffic ⓘ request prioritization ⓘ server push ⓘ stream control ⓘ
goal	to improve web security ⓘ to reduce web page load latency ⓘ to speed up web browsing ⓘ
influenced	HTTP/2 ⓘ RFC 7540 ⓘ surface form: RFC 7540 (HTTP/2 specification)
inspired	HPACK header compression in HTTP/2 ⓘ
introduced	around 2009 ⓘ
layer	application layer ⓘ
license	open specification ⓘ
negotiationMechanism	ALPN (Application-Layer Protocol Negotiation) ⓘ NPN (Next Protocol Negotiation) ⓘ
port	TCP port 443 (typical deployment over HTTPS) ⓘ
protocolType	HTTP enhancement protocol ⓘ web protocol ⓘ
relationToHTTP	acts as a framing layer for HTTP semantics ⓘ
replacedBy	HTTP/2 ⓘ
securityFeature	mandatory TLS in most deployments ⓘ
standardizedBy	IETF HTTPbis working group (as input to HTTP/2 design) ⓘ
status	deprecated ⓘ
supersededBy	HTTP/2 ⓘ
supportedBy	Amazon Appstore ⓘ surface form: Amazon Silk Google Chrome ⓘ Internet Explorer ⓘ surface form: Internet Explorer (via later versions / Edge family support for HTTP/2 influenced by SPDY) Mozilla Firefox ⓘ Opera ⓘ
supportedOnServer	Apache HTTP Server (via mod_spdy and later modules) ⓘ Jetty ⓘ Node.js ⓘ surface form: Node.js (via libraries) nginx ⓘ
uses	Transmission Control Protocol ⓘ surface form: TCP TLS ⓘ

How these facts were elicited

Referenced by (6)

Full triples — surface form annotated when it differs from this entity's canonical label.

HTTP/2 → originatedFrom → SPDY ⓘ

HTTP/2 → influencedBy → SPDY ⓘ

SPDY → documentation → SPDY self-linksurface differs ⓘ

this entity surface form: SPDY Protocol whitepaper by Google

NPN (Next Protocol Negotiation) → supports → SPDY ⓘ

NPN (Next Protocol Negotiation) → relatedTo → SPDY ⓘ

ALPN (Application-Layer Protocol Negotiation) → allowsNegotiationOf → SPDY ⓘ

subject surface form: ALPN

All labels observed (2)

How this entity was disambiguated Show

Statements (51)

How these facts were elicited Show

Referenced by (6)

How this entity was disambiguated

How these facts were elicited