IP Library Granted Patent US 10,911,531
Granted Patent B2
US 10,911,531 · App. 16/174,160 · Granted Feb 2, 2021

Multi-tiered server network

Inventors: Paul E. Stolorz (Los Altos, CA); John K. Salmon (Chappaqua, NY); Michael S. Warren (Santa Fe, NM); Jeffrey G. Koller (Oxnard, CA); Aric Hagberg (Santa Fe, NM); Maksim Yevmenkin (Thousand Oakds, CA); Mark Brady (Thousand Oaks, CA); David Pfitzner (College Park, AU); Ted Middleton (Moorpark, CA)
Assignee: Level 3 Communications, LLC
H04L67/1034H04L29/06H04L29/12066H04L29/12783H04L41/069H04L41/0631H04L41/0893H04L41/22H04L43/00H04L43/04H04L61/1511H04L61/35H04L67/1002H04L67/1008H04L67/1021H04L67/1023H04L67/1029H04L67/1036H04L67/18H04L67/26H04W4/021H04L43/045H04L43/06H04L43/0811H04L43/0817H04L43/0852H04L43/10H04L43/12H04L67/02H04L67/1031H04L69/329
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Quick Facts
Patent No.
US 10,911,531
App. No.
16/174,160
Granted
Feb 2, 2021
Kind
B2
Abstract

A network includes a first tier of servers, a second tier of servers and a third tier of servers. The first tier of servers comprises a plurality of primary servers capable of responding to requests. The plurality of primary servers includes at least one dynamic server having a load share characteristic that is dynamically altered during a first period in time and at least one static server having a constant load share characteristic during the first period in time. The second tier of servers includes at least two first layer overflow servers. Each of the first layer overflow servers is configured to provide response duties in the event that one or more of the primary servers is unavailable or overloaded. The third tier of servers comprising at least two second layer overflow servers. Each of the second layer overflow servers is configured to provide response duties in the event that one or more of the primary servers is unavailable or overloaded and one or more of the first layer overflow servers is unavailable or overloaded.

Claims (7)

1. A network comprising:

a first tier of servers comprising a plurality of primary servers capable of responding to requests, wherein the plurality of primary servers comprises:

at least one dynamic server having a load share characteristic that is dynamically altered during a first period in time, wherein a first dynamic server of the at least one dynamic server stores the load share characteristic for the first dynamic server and provides the load share characteristic when the first dynamic server is polled, and wherein the load share characteristic comprises a fraction of the requests to be directed to the first dynamic server by a name server; and

at least one static server having a constant load share characteristic during the first period in time;

a second tier of servers comprising at least two first layer overflow servers, wherein each of the first layer overflow servers is configured to provide response duties in the event that one or more of the primary servers is unavailable or overloaded; and

a third tier of servers comprising at least two second layer overflow servers, wherein each of the second layer overflow servers is configured to provide response duties in the event that one or more of the primary servers is unavailable or overloaded and one or more of the first layer overflow servers is unavailable or overloaded;

wherein each of the first tier of servers, the second tier of servers, and the third tier of servers includes at least one processing device and at least one associated memory operatively connected to the at least one processing device.

Assignments (9)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 26, 2024
From: LEVEL 3 COMMUNICATIONS, LLC
To: SANDPIPER CDN, LLC
Reel/Frame 067244/0690 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 14, 2018
From: YEVMENKIN, MAKSIM; PFITZNER, DAVID; STOLORZ, PAUL E.; KOLLER, JEFFREY; WARREN, MICHAEL S.; HAGBERG, ARIC; SALMON, JOHN K.; BRADY, MARK
To: DIGITAL ISLAND, INC.
Reel/Frame 047497/0520 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 14, 2018
From: CABLE & WIRELESS INTERNET SERVICES, INC.
To: SAVVIS ASSET HOLDINGS, INC.
Reel/Frame 047497/0622 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 14, 2018
From: SAVVIS COMMUNICATIONS CORPORATION
To: MOUNT SHASTA ACQUISITION LLC
Reel/Frame 047497/0771 →
MERGER Recorded Nov 14, 2018
From: MOUNT SHASTA ACQUISITION LLC
To: LEVEL 3 COMMUNICATIONS, LLC
Reel/Frame 047497/0786 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 14, 2018
From: MIDDLETON, TED
To: LEVEL 3 COMMUNICATIONS, LLC
Reel/Frame 047497/0823 →
CHANGE OF NAME Recorded Nov 14, 2018
From: DIGITAL ISLAND, INC.
To: CABLE & WIRELESS INTERNET SERVICES, INC.
Reel/Frame 047532/0873 →
CHANGE OF NAME Recorded Nov 14, 2018
From: SAVVIS ASSET HOLDINGS, INC.
To: SAVVIS, INC.
Reel/Frame 047532/0896 →
SECURITY AGREEMENT Recorded Nov 14, 2018
From: SAVVIS COMMUNICATIONS CORPORATION
To: WELLS FARGO FOOTHILL, INC., AS ADMINISTRATIVE AGENT
Reel/Frame 047532/0918 →
Continuity (5)
Continuation 14954092 · Nov 30, 2015
Continuation 11932162 · Oct 31, 2007
Continuation 10259497 · Sep 30, 2002
Provisional Application 60325177 · Sep 28, 2001
Related Publication 20190089776A1 · Mar 21, 2019