投稿時間:2022-05-28 22:23:02 RSSフィード2022-05-28 22:00 分まとめ(27件)

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python	Pythonタグが付けられた新着投稿 - Qiita	wordcloudインストール時のエラー	https://qiita.com/wejhhv/items/afd640fdfe7d1ac3f2d4	errorcomman	2022-05-28 21:20:15
python	Pythonタグが付けられた新着投稿 - Qiita	LaTeXのエディタを作った2(初心者)	https://qiita.com/tt_and_tk/items/01b2553bf0671245a147	latex	2022-05-28 21:19:51
python	Pythonタグが付けられた新着投稿 - Qiita	【Python】icrawlerを用いた画像収集（たった３行！）	https://qiita.com/sho73movie/items/e8c1cefd1758d6dbc0c6	pipins	2022-05-28 21:14:25
js	JavaScriptタグが付けられた新着投稿 - Qiita	JSでErrorを継承して作った独自エラークラスを判定する方法	https://qiita.com/kujirahand/items/d1118cf80d7dca5ff77c	constructormsgsupermsg	2022-05-28 21:05:04
AWS	AWSタグが付けられた新着投稿 - Qiita	AWS日記42 (AWS Certificate Manager)	https://qiita.com/tanaka_takurou/items/b9856d9a4c826b5cf540	awscertificatemanager	2022-05-28 21:36:44
AWS	AWSタグが付けられた新着投稿 - Qiita	AWSアソシエイト 未経験者が勉強中に間違えたものpart1	https://qiita.com/shirochu0911/items/807b3466b7572cf6f66a	amazonrds	2022-05-28 21:31:18
海外TECH	Ars Technica	Sony accelerates push into car sector in diversification drive	https://arstechnica.com/?p=1857027	autonomous	2022-05-28 12:15:22
海外TECH	MakeUseOf	How to Preview Your Website on Different Devices Using Google Chrome	https://www.makeuseof.com/google-chrome-preview-website-different-devices/	How to Preview Your Website on Different Devices Using Google ChromeWith responsive design you can build a site that looks as good on a phone as it does on a desktop But how do you test your design across devices	2022-05-28 12:30:14
海外TECH	MakeUseOf	15 Relaxing Websites to Help When You Feel Overwhelmed	https://www.makeuseof.com/tag/feeling-overwhelmed-5-relaxing-corners-web/	overwhelmedif	2022-05-28 12:15:14
海外TECH	DEV Community	Understanding Quality of Service (QoS)	https://dev.to/susid/understanding-quality-of-service-qos-3pfm	Understanding Quality of Service QoS PrerequisitesBefore reading any further I recommend that you should have some understanding on Network trafficIP PacketsLayers of the OSI model focus on layers and UDP and TCP protocolsIP precedence and type of service fields Definition of termsBelow are some of the terms you shall encounter through this article Buffers these are physical storage areas that temporarily hold data as it s transferred from one location to another Jitters this refers to the delay inconsistency between packets that differs over time when a signal wanes Latency latency is the time it takes for a packet to be sent from its source to its destination Bit rate the number of bits sent over a network per second Packet rate the number of packets being sent per second An ingress queue it holds packets till a router s CPU pushes the data to a suitable interface An egress queue it holds packets that a router serializes onto an Ethernet cable Understanding Quality of Service QoS Networks have become an important asset in today s world Networks allow their users to share files data and other types of information Thus you can optimize your network to ensure that it performs at its full potential QoS is an essential set of technologies that allows a user to optimize their network so that it can run at its full potential The importance of having a peak performing network is it ensures that intensive applications run efficiently due to the availability of adequate network resources In this article we will explore what is Quality of Service and its importance to a network What Is QoSQoS is a group of technologies that allow a user to manage their network s traffic thus guaranteeing the optimum performance of essential applications in their workplace or home Through QoS you can be able to prioritize network traffic control jitters and lower latency Furthermore QoS allows you to optimize the performance of specific applications on their network and gain visibility into their network s bit rate and packet rate Lastly you can configure how packets are routed in your network to avoid transmission delays How Does QoS WorkQoS utilizes a set of various techniques to guarantee the optimal performance of critical applications such as VoIP video conferencing and online gaming Some of these techniques are the resource reservation protocol RSVP queuing and traffic marking Traffic MarkingQoS works by identifying the various applications or activities that would benefit from managing a network s traffic After identifying these applications QoS marks the specific traffic that needs managing Marking the network s traffic allow routers to create separate virtual queues for each application There are various ways in which routers mark network traffic These ways include Class of Service CoS and Differentiated Services Code Point DSCP Class of Service CoS Class of service is a bit field found in an Ethernet frame header when one uses the q networking standard that supports virtual local area networks VLAN on an Ethernet network CoS marks a network s traffic at layer two by altering the class of service bits found in frame headers Adjusting the class of service bits allows QoS to know what traffic to manipulate and how to manipulate the traffic Thus bandwidth intensive applications will fall first in the queue as routers will reserve the network s bandwidth for these applications Differentiated Service Code Point DSCP DSCP is a section in an IP packet that assigns varying levels of services to a network s traffic Giving varying levels of service is achieved through tagging a DSCP code to each packet on the network and matching it with the equivalent level of service DSCP marks packets in the layer three packet header QueuingQueuing is the process of making policies that provide special treatment to various data streams over others The process is made possible by utilizing special high performance memory buffers found in switches and routers called queues What is a QueueA Queue is a high performance buffer in a router or a switch that holds traffic until it can be processed or serialized Routers and switches have two types of hardware queues ingress inbound and egress outbound queues Hardware queues are characterized as standard or strict priority queues The standard queues treat all traffic as equal In these queues no traffic receives special treatment On the contrary the strict priority queues are dedicated to high priority traffic thus QoS enabled interfaces utilize this type of queue to process high priority packets How High Priority Traffic is ProcessedWhen routers receive traffic any packets marked with a higher DSCP or IP value than others are directed into the strict priority queues Here traffic marked as high priority is processed faster than other traffic thus increasing your network s performance and reducing the chances of routers dropping packets during congestion Resource Reservation Protocol RSVP RSVP is a transport layer protocol that reserves network resources to get varying Quality of Service levels for an application s data streams The protocol accomplishes its task by sending out RSVP messages from a source to a receiver and vice versa RSVP messages are classified into two path and reservation messages Path messages are sent from a source to a receiver by storing the path state at each node in the message s path The path states direct a receiver to reserve network resources on each node that it passes on the network Reservation messages are sent from a receiver to a sender along the route of the path message These messages identify the resources required by a data stream Importance of QoSIt guarantees the optimal performance of applications that need high bandwidth for real time traffic Applications such as video conferencing applications VoIP streaming applications and online gaming are some of the particular applications that are bandwidth intensive and highly sensitive to jitters and latency QoS helps prevent delays in sensitive applications operating on a network These applications usually favor UDP protocol over TCP protocol The UDP protocol is favored over TCP because packets get transmitted in an ordered stream Furthermore the UDP protocol differs from the TCP protocol because the protocol does not retransmit data packets that get corrupted or lost during transmission The lack of retransmission in UDP applications creates the need for a QoS supported network that has low instances of jitters and minimum latency thus reducing delays that can result in choppy audios in an IP call or sketchy videos in a video stream QoS makes it possible to plan and manage network resources Planning allows a person to prioritize traffic applications data flows users and network resources thus ensuring optimal performance Additionally planning reduces costs and the need to invest in link expansion QoS enhances the user experience Since QoS guarantees the optimal performance of critical applications enterprises that utilize the technology report an increase in employee performance and satisfaction This results in tasks being completed to the required standards and in due time ConclusionIn this article we learned what Quality of Service QoS is how QoS utilizes techniques such as traffic marking queuing and the resource reservation protocol to guarantee the optimal performance of critical applications on a network Additionally we learned the importance of having QoS enabled on a network I consider QoS as an essential technology that should be in built into any router or switch that will be produced in the future I found learning about these technologies to be fascinating I hope you gained some insight on how you can speed up your network without the need to upgrade your network s bandwidth Until next time happy reading	2022-05-28 12:14:46
Apple	AppleInsider - Frontpage News	Daily deals May 28: Discounted refurbished MacBook Pro, $90 off iPad mini, 50% off 55-inch TCL 4K TV, more	https://appleinsider.com/articles/22/05/28/daily-deals-may-28-discounted-refurbished-macbook-pro-90-off-ipad-mini-50-off-55-inch-tcl-4k-tv-more?utm_medium=rss	Daily deals May Discounted refurbished MacBook Pro off iPad mini off inch TCL K TV moreAlongside refurbished MacBook Pro and iPad mini discounts Saturday s best deals include off a Gaggia espresso machine off Monoprice home theater speakers and much more Best deals for May Every day AppleInsider searches online retailers to find offers and discounts on items including Apple hardware upgrades smart TVs and accessories We compile the best deals we find into our daily collection which can help our readers save money Read more	2022-05-28 12:29:14
ニュース	BBC News - Home	Half-term travel: EasyJet and Tui cancel flights as queues form at Dover	https://www.bbc.co.uk/news/business-61614437?at_medium=RSS&at_campaign=KARANGA	dover	2022-05-28 12:39:20
ニュース	BBC News - Home	Severodonetsk: Ukrainian man cycles from besieged city, dodging Russian shells	https://www.bbc.co.uk/news/world-europe-61614256?at_medium=RSS&at_campaign=KARANGA	severodonetsk	2022-05-28 12:03:54
ニュース	BBC News - Home	French Open: Iga Swiatek through to Roland Garros last 16	https://www.bbc.co.uk/sport/tennis/61617195?at_medium=RSS&at_campaign=KARANGA	straight	2022-05-28 12:08:15
北海道	北海道新聞	使用済み太陽光パネルを再資源化　環境省、義務付け検討	https://www.hokkaido-np.co.jp/article/686775/	使用済み	2022-05-28 21:36:00
北海道	北海道新聞	１７病院に身代金ウイルス　２２年被害６件、過去最悪	https://www.hokkaido-np.co.jp/article/686767/	過去最悪	2022-05-28 21:21:09
北海道	北海道新聞	室温１１０度の「鬼サウナ」、登別グランドホテルに　「ととのえ親方」がプロデュース	https://www.hokkaido-np.co.jp/article/686759/	登別グランドホテル	2022-05-28 21:28:53
北海道	北海道新聞	猫と遊び奨学資格剥奪　上海の大学、防疫規則違反	https://www.hokkaido-np.co.jp/article/686774/	新型コロナウイルス	2022-05-28 21:30:00
北海道	北海道新聞	自民、「反撃能力保有」を明記　参院選の公約案骨子	https://www.hokkaido-np.co.jp/article/686771/	骨子	2022-05-28 21:27:43
北海道	北海道新聞	４回目接種券、１３市が全員発送　都道府県庁所在の自治体	https://www.hokkaido-np.co.jp/article/686772/	都道府県庁	2022-05-28 21:26:00
北海道	北海道新聞	上川管内１４８人感染、旭川は１２１人　新型コロナ	https://www.hokkaido-np.co.jp/article/686681/	上川管内	2022-05-28 21:15:44
北海道	北海道新聞	道南１０９人感染　函館で新規クラスター　新型コロナ	https://www.hokkaido-np.co.jp/article/686704/	新型コロナウイルス	2022-05-28 21:13:36
北海道	北海道新聞	一度は諦めた高校野球、知的障害に負けず　網走の特別支援学校生「自分も出たい」	https://www.hokkaido-np.co.jp/article/686758/	特別支援学校	2022-05-28 21:10:55
北海道	北海道新聞	「四国金毘羅ねぷた祭り」初開催　青森・弘前とコラボ、香川	https://www.hokkaido-np.co.jp/article/686765/	青森県弘前市	2022-05-28 21:07:00
北海道	北海道新聞	キャッシュレスで買い物、最大１０％還元　芽室町、電子決済３社と連携し今年も	https://www.hokkaido-np.co.jp/article/686763/	電子決済	2022-05-28 21:03:00
仮想通貨	BITPRESS（ビットプレス）	[FNN] デジタル「岸田トークン」を自民党が初配布へ　NFTに本腰か	https://bitpress.jp/count2/3_9_13223	配布	2022-05-28 21:46:43
仮想通貨	BITPRESS（ビットプレス）	[NHK] ステーブルコイン「テラ」暴落 なぜ？【経済コラム】	https://bitpress.jp/count2/3_9_13222	経済	2022-05-28 21:44:20