EMA C++ Developers Guide : 1 Introduction : 1.4 Acronyms and Abbreviations
 
1.4 Acronyms and Abbreviations
 
Table 1: Acronyms and Abbreviations
ACRONYM / Term
Meaning
ADH
LSEG Real-Time Advanced Distribution Hub is the horizontally scalable service component within the LSEG Real-Time Distribution System providing high availability for publication and contribution messaging, subscription management with optional persistence, conflation and delay capabilities.
ADS
LSEG Real-Time Advanced Distribution Server is the horizontally scalable distribution component within the LSEG Real-Time Distribution System providing highly available services for tailored streaming and snapshot data, publication and contribution messaging with optional persistence, conflation and delay capabilities.
API
Application Programming Interface
ASCII
American Standard Code for Information Interchange
Enterprise Message API
The Enterprise Message API (EMA) is an ease of use, open source, Open Message Model API. EMA is designed to provide clients rapid development of applications, minimizing lines of code and providing a broad range of flexibility. It provides flexible configuration with default values to simplify use and deployment. EMA is written on top of the Enterprise Transport API (ETA) utilizing the Value Added Reactor and Watchlist features of ETA.
Enterprise Transport API (ETA)
Enterprise Transport API is a high performance, low latency, foundation of the LSEG Real-Time SDK. It consists of transport, buffer management, compression, fragmentation and packing over each transport and encoders and decoders that implement the Open Message Model. Applications written to this layer achieve the highest throughput, lowest latency, low memory utilization, and low CPU utilization using a binary Rssl Wire Format when publishing or consuming content to/from LSEG Real-Time Distribution Systems.
HTTP
Hypertext Transfer Protocol
HTTPS
Hypertext Transfer Protocol (Secure)
JSON
JavaScript Object Notation
JWK
JSON Web Key. Defined by RFC 7517, a JWK is a JSON formatted public or private key.
JWKS
JSON Web Key Set, This is a set of JWK, placed in a JSON array.
JWT
JSON Web Token. Defined by RFC 7519, JWT allows users to create a signed claim token that can be used to validate a user.
OMM
Open Message Model
QoS
Quality of Service
RDM
Domain Model
DP
Delivery Platform: this platform is used for REST interactions. In the context of Real-Time APIs, an API gets authentication tokens and/or queries Service Discovery to get a list of Real-Time - Optimized endpoints using DP.
LSEG Real-Time Distribution System
LSEG Real-Time Distribution System is LSEG’s financial market data distribution platform. It consists of the LSEG Real-Time Advanced Distribution Server and LSEG Real-Time Advanced Distribution Hub. Applications written to the LSEG Real-Time SDK can connect to this distribution system.
Reactor
The Reactor is a low-level, open-source, easy-to-use layer above the Enterprise Transport API. It offers heartbeat management, connection and item recovery, and many other features to help simplify application code for users.
RMTES
A multi-lingual text encoding standard
RSSL
Source Sink Library
RTT
Round Trip Time, this definition is used for round trip latency monitoring feature.
RWF
Rssl Wire Format, an LSEG proprietary binary format for data representation.
LDF-D
Data Feed Direct
UML
Unified Modeling Language
UTF-8
8-bit Unicode Transformation Format