1998.7.12 Hyun-Chul Kim ======================================= Minutes of Cache WG Meeting (Draft) ======================================= Place: Iris Room, Intercontinental Hotel, Seoul Time: 1998.7.2 11:30~14:00 Attendees : Hiroyuki Kusumoto WIDE kusumoto@wide.ad.jp Woohyong Choi KAIST whchoi@cosmos.kaist.ac.kr Masaaki Nabeshima NTT nabe@slab.ntt.co.jp Hyun-chul Kim KAIST hckim@cosmos.kaist.ac.kr Jieun Lee KT jelee@edenhill.kotel.co.kr Tan Tin Wee NUS tinwee@irdu.nus.sg 1. Introduction and Welcome 2. Approval of the agenda 3. Reports - Korea Root Cache server status (by Jieun Lee from KT) H/W : Sun Enterprise server 3000 O/S : Solaris 2.6 Main memory : 256 MB Disk space : 120 GB (4 GB disk X 30) Cache space: 11GB Cache S/W : Squid 1.1.21 (will be upgraded to Squid 1.2.X) Network : ATM or 100 Mbps FastEthernet (not determined yet) Status : completed setup process. Connection-ready status. - Tokyo Root Cache server status (by Masaaki Nabeshima from NTT) Focus : Enabling high-performance cache server by clustering PCs. H/W : 5 Clustered PCs (Pentium II 300MHz) O/S : FreeBSD 2.2.6 Main memory : 512 MB Disk space : 27 GB (3 Seagate Cheetah, Ultra-Wide SCSI with 10,000 RPM) Cache space: 18 GB SCSI interface : DPT SCSI interface with optional 64MB cache Network : 100 Mbps FastEthernet Status : Still under construction. Testing/installation will be finished by the end of this summer - SingAREN Root Cache (by Tan Tin Wee from NUS) H/W : DEC Alpha server O/S : DEC Unix Main memory : 512 MB Disk space : 18 GB Cache space: 16 GB Status : Relationship can be initiated at any time. Govermental Regulation : All http access should be via proxy conforming to content filtering regulations. Maintaining hundreds of block list. - The 3rd International Cache Workshop (by Hyun-Chul Kim from KAIST) (note : full presentation material will be available at APAN Cache WG's homepage, http://www.apan.net/groups/cache.html) Date : 1998.6.15~17 Place: Hulme Hall at University of Manchester, UK. 35 submitted papers and 5 presentations about commercial cache products. (Network Appliance, Inktomi, Infolibria, DynaCache and Alteon Networks) Major areas and trends Efforts to measure/analyze and improve performance of cache networks. Progress reports of various cache projects. Making and Suggesting new paradigm (caching + replication, caching + multicasting, ...) Benchmarking Web Caches. Characterizing and modeling Web Cache's access pattern and traffic. Large Scale Caching Questions "Were are we ? and where do we want to be ?" - Commercial Product Testing and Report (by Masaaki Nabeshima from NTT) (note : full presentation materials will be available at our WG's homepage) CISCO Cache Engine Testing environment : not transparent proxying mode 3 users (no performance measurement) Advantages : Easy configuration (just about 20 parameters) Web-based configuration and monitoring Small 19-inch box includes everything (No display, No keyboard). Disadvantages : Too ambiguous and insufficient Error messages. doesn't support FTP proxying and ICP. No user authentication(Filtering on Router is required) No statistics report tool Microsoft Proxy Server Version 2. he gaves up using it after two weeks later, due to frequent connection-relay error and occasional hanging up. CacheFlow : will be tested later. 4. New Proposals - Some ideas proposed by Masaaki Nabeshima (presentation material will be available at APAN Cache WG's homepage) IPv6-IPv4 Relay (Proxy) motivation : Small number of users, a few web servers and small amount of traffic caused by them on IPv6 testbed -> not enough to test IPv6 successfully. approach : Enable IPv6 users access Web servers on IPv4 net. (Proxy relay IPv6 http request to IPv4) Reverse Proxy Cache Service A Proxy Cache server for a Web server(a kind of mirror server) Parent cache selection by using BGP Route Server Cache server can get routing information from BGP Route Server. Cache can chose the parent cache in the AS where the target web server is in. 5. Discussion : revising and determining WG's goals, action items and milestone. - Goals (1) Make a cache hierarchy on APAN and contribute to the effort of building a Global cache hierarchy. (2) Define and develop an effective cache cooperation system. (3) Contribute to the effort of suggesting and building next-generation information infrastructure. - Action items (1) APAN Root Cache hierarchy (by the end of this summer) (2) Effective cache cooperation network (3) Large Object Caching (will be lead by Hyun-Chul Kim and Jaeyeon Jung) - Milestone 1998.8 Install Root Caches at Seoul and Tokyo XPs. Establish and operate initial APAN Root Cache hierarchy (Korea Cache, Tokyo Cache, SingAREN Cache). 1999.1 APAN Cache hierarchy : Operational status. Issue a report about the effectiveness of APAN Cache hierarchy. Large Object Cache : Design and Prototyping. 1999.6 (tentative) Deploy and test large object cache server on APAN. Release a cache hierarchy auto-configuration tool. 2000.1 (tentative) Develop mechanisms for adaptive cache hierarchy. - Cache cooperation will be tested by using both ICP and CacheDigest and will be followed by measurement/analysis process. 6. Date of Next Meeting - WG Meeting will be held during the regular APAN meetings 7. A.O.B : Next International WWW Cache Workshop - CAIDA and TERENA TF-Cache showed strong intention to invite and host next year's international WWW Cache Workshop at Manchester. - It would be difficult for us (APAN Cache WG) to host it next year. (If possible, APAN-KR or KAIST will invite and host this workshop