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Zdenek Cendra Profile
Zdenek Cendra

@zdendac

Followers
5K
Following
435
Statuses
1K

Founder: https://t.co/9O5fmTGB7x, https://t.co/S69h40KZX9, https://t.co/RPPF7YvFa3 Co-founder: https://t.co/0qeJTaBYsb

Prague
Joined May 2011
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@zdendac
Zdenek Cendra
4 months
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@zdendac
Zdenek Cendra
4 months
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@zdendac
Zdenek Cendra
7 months
@danielhavir We have 12 network guys today. This foto is from 2022 :)
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@zdendac
Zdenek Cendra
8 months
@zajdee FA-1 jsou dvě routy, North a Sourh.
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@zdendac
Zdenek Cendra
10 months
RT @PetrBrzek: Today we are a company of 7 people, and I am pleased to announce that we have closed a Pre-seed Round worth €1M. Thank you,…
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@zdendac
Zdenek Cendra
1 year
132 ms round trip.
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@zdendac
Zdenek Cendra
1 year
New 2 x 400G link from Paris to Ashburn is live! Via DUNANT submarine cable system. Our total EU x US capacity: 2.6 Tbps via 6 cable systems (Majority via 400G technology). Next upgrade in January: 2 x 400G between Bilbao and Ashburn via MAREA submarine cable system.
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@zdendac
Zdenek Cendra
1 year
Listopad 23 bude první ziskový měsíc Rohlíku v Mnichově. Like!
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@zdendac
Zdenek Cendra
1 year
@ilblog Letos (2023) budeme mít revenue nad 3 mld, EBITDA olízne 2 mld, čistý zisk po daních bude nad 1.6 mld. Crazy intenzivních last 12 months. Ambice je několikrát naši "garáž z Vinohrad" znásobit, pořád jsme v globálních číslech jen kulhající koník, který se ještě nerozeběhl.
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@zdendac
Zdenek Cendra
1 year
CDN77 network team: odpolední quick update meetup před kanceláří. Pokud právě sedíš v kanceláři a nemáš zasedačku na zahrádce pod hruškou, mrkni na always hledáme další tech super stars.
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@zdendac
Zdenek Cendra
2 years
New cage of CDN77 servers in Los Angeles live. 3,6 Tbps active external internet capacity via only 400 Gbps links. Direct n x 100 Gbps backbone to Tokyo, Chicago and Dallas.
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@zdendac
Zdenek Cendra
2 years
Apple Inc. (AS714) is now connected directly to This is the first time CZ/SK/AT networks are able to reach Apple in the local Internet Exchange. helps to deliver over 3 Tbps in daily peaks between all connected networks.
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@zdendac
Zdenek Cendra
2 years
115 Tbps. Current active external network internet capacity from servers to users (transit, peers, caches). +20 Tbps in the last 90 days. +60 Tbps in the last 2 years. 50%+ in the US & LATAM. First 300 x 400G ports in operation (int & ext) Not bad.
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@zdendac
Zdenek Cendra
2 years
2000+ Gbps DDoS attacks every day. New normal.
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@zdendac
Zdenek Cendra
2 years
Fresh network stats: 93 Tbps active external capacity 20 000+ physical servers 1000+ racks 700+ new servers last month (3.5% MOM growth) 161 edge server POPs (cities) 10 000 x 100 Gbps ports (50% active) 500 x 400 Gbps ports (25% active) Not so bad :)
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@zdendac
Zdenek Cendra
2 years
CDN77 traffic between main POPs via our n x 100/400 Gbps fiber backbone. Thicker the line - higher traffic volume. Traffic is primary cache fill between Origin servers and Edge layer.
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@zdendac
Zdenek Cendra
3 years
90 Tbps network mafia! 7 NetOps guys @ Prague 40 Tbps daily peaks 100+ datacenters, 6 continents 450 x 400 Gbps ports 5000 x 100 Gbps ports 1500+ network devices n x 100 Gbps backbone around the planet Single AS60068 Never ending routing fun :)
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