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Speed measurement service Product List

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Relevant laws and regulations <Impersonation emails>

Relevant laws and regulations <Impersonation emails>

Starting with invoices and compliance with PCI DSS 4.0. It is related to phishing emails.

We will introduce the laws and systems related to phishing emails. Under the "Invoice System," it is stated that "when digitizing qualified invoices, it is necessary to implement phishing email countermeasures, similar to the Electronic Bookkeeping Act." The "Revised Electronic Bookkeeping Preservation Act" requires that "when sending invoices or receipts via email, they must be stored as electronic data." For more details, please be sure to read the published catalog. 【Related Laws and Systems】 ■ Invoice System (starting October 1, 2023) ■ Revised Electronic Bookkeeping Preservation Act (mandatory from January 1, 2024) ■ PCI DSS 4.0 compliance (by March 31, 2024) *For more information, please refer to the PDF materials or feel free to contact us.

  • Other security

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[Information] Cloudflare Company and Service Overview

[Information] Cloudflare Company and Service Overview

Providing performance, security, reliability, and insights for anything connected to the internet!

Spelldata is the first agency in Asia and Japan to be certified as a managed service provider by Cloudflare in April 2020. This document includes an overview of Cloudflare, its features, and a summary of performance services. With high technical skills and implementation achievements, we support the introduction of Cloudflare on your site and maximize its performance. [Contents (partial)] ■ About Cloudflare ■ Overview of Cloudflare ■ Global Cloud Network ■ Integrated management of all origin infrastructure at the edge ■ Features of Cloudflare *For more details, please refer to the PDF document or feel free to contact us.

  • Software (middle, driver, security, etc.)

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Cloudflare's features

Cloudflare's features

Performance, security, reliability, analysis! Covering the necessary features according to the scale of the site!

Cloudflare has four main features. In "Performance," it supports everything from simple cache rule settings using CDN to complex cache rules. Web optimization and mobile optimization are also possible. Additionally, it covers necessary features such as "Security," "Reliability," and "Analytics," depending on the scale of the site. You can view detailed features from the related links. 【Feature Composition (Partial)】 <Performance> ■CDN ■Web Optimization ■Mobile Optimization <Security> ■DDoS Protection ■IoT Security ■WAF ■Border Protection *For more details, please refer to the related links page or feel free to contact us.

  • Server monitoring and network management tools
  • Other server related
  • Other security

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Cloudflare's TTL

Cloudflare's TTL

Determining the priority of Cloudflare's TTL with a chart! Explained in an easy-to-understand way!

The determination of TTL in Cloudflare is complexly influenced by Cloudflare's Workers, Page Rules, and default caching. The related links explain this determination in a chart. It also provides explanations about "Expires and Cache-Control" and "Public and Private," so please take a look. 【Overview】 ■ For cache expiration, there are the absolute time-specified Expires header and the relative time-specified Cache-Control header. ■ The Cache-Control header can specify either the Public or Private directive to allow or disallow caching by intermediate proxies. *For more details, please refer to the related links page or feel free to contact us.

  • Server monitoring and network management tools
  • Other server related
  • Other security

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Cloudflare's SLA

Cloudflare's SLA

Guaranteed 100% operation! Introducing the differences in SLA between the Business plan and the Enterprise plan!

In accordance with the "Quality Assurance of Sales" stipulated in the revised Civil Code on Obligations scheduled to take effect on April 1, 2020, we clarify the SLA of Cloudflare's services. The Free and Pro plans do not have an SLA, while the Business and Enterprise plans do have an SLA. The Business plan is a self-service plan, so support is available via email, chat, or the Cloudflare community forum. Additionally, the Business plan includes a guarantee regarding availability, but there is no guarantee regarding performance. The Enterprise plan assigns a dedicated customer support manager and SE from Cloudflare. The significant difference is that it includes a performance guarantee, ensuring that delivery will always be faster than from the origin. Furthermore, during high load times, the Business plan may deliver from overseas data centers, whereas the Enterprise plan will scale out using domestic servers. *For more details, please refer to the related link page or feel free to contact us.

  • Server monitoring and network management tools
  • Other server related
  • Other security

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What is information theory?

What is information theory?

The quantitative value of information! The more surprising the information is to the reader, the higher its value!

The father of information technology stated, "The value of information is the magnitude of surprise." The more familiar the recipient is with the content of the information, the less valuable that information becomes. Conversely, the less the recipient knows about the content, the more valuable the information is. In other words, the value of information changes relatively based on how well the recipient understands the subject matter. This is defined as the amount of information. Based on probability theory, the way to quantify the value of information has been established. The greater the surprise from information that the reader does not know, the higher the value of that information. 【Levels of Communication Problems】 ■Level A: Technical Issues How accurately can symbols be transmitted in communication? ■Level B: Semantic Issues How accurately can the transmitted symbols convey the intended meaning? ■Level C: Effectiveness Issues How effectively does the received intention influence the desired action? *For more details, please refer to the PDF document or feel free to contact us.

  • Other services

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What is information quality?

What is information quality?

Quality assessment of qualitative information! Introducing differences in quality based on expression, causality, and scope!

Information quality is a qualitative evaluation indicator of information. The value of information is considered to be the magnitude of surprise, according to information theory. So, if the content is surprising, is it acceptable to write dubious or false information? No, that is not correct. By checking the content against the indicators of information quality, it becomes possible to enhance the value of the content. The related links explain the differences between data quality and information quality. 【10 Indicators of Information Quality (Partial)】 ■ Authority/Reliability/Verifiability ■ Scope of Coverage ■ Composition and Organization ■ Objectivity ■ Integrity *For more details, please refer to the related links page or feel free to contact us.

  • Other services

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Content Quality Improvement Service Procedure

Content Quality Improvement Service Procedure

Valuable information varies from person to person! It starts with 'knowing yourself and knowing your opponent'!

The value of information is influenced by the difference between what the other party knows and what we possess, and this difference is calculated based on probability distributions. This consulting begins by clarifying what we know and what the other party does not know, starting from "knowing oneself and knowing the other." Consulting mainly consists of discussions and hearings. If objective data is needed, market research will also be conducted. 【Service Procedure】 ■1. Hearing ■2. Site Analysis ■3. Determination of Pages for Information Quality Improvement ■4. Page Analysis ■5. Application of Improvement Proposals ■6. Confirmation of Improvement Effects ■7. Formulation of Next Improvement Measures *For more details, please refer to the PDF document or feel free to contact us.

  • Other services

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Measures against email impersonation and email encryption specifications: What is MTA-STS?

Measures against email impersonation and email encryption specifications: What is MTA-STS?

Complete the encryption of the email delivery route along with SMTPS, POPS, and IMAPS!

On our company website, we introduce measures against spoofing emails and the specifications for email encryption. "MTA-STS" (Mail Transfer Agent Strict Transport Security) is a mechanism that allows email service providers to declare their ability to receive secure SMTP connections via TLS and specify whether to reject delivery to MX hosts that do not provide TLS with a trusted server certificate from the sending SMTP server. In the related links, we provide a detailed introduction to the issues with STARTTLS and the features of MTA-STS. Please take a look. [Contents] ■ Issues with STARTTLS ■ Mechanism of MTA-STS *Detailed information can be viewed from the related links. For more information, please feel free to contact us.

  • Other server related
  • Other security
  • Server monitoring and network management tools

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[Blog] Why Page Speed is a Factor in Determining Search Rankings

[Blog] Why Page Speed is a Factor in Determining Search Rankings

The search is until the data on the web page is displayed! Would you like to measure the display speed?

Google's emphasis on display speed in determining search rankings can be understood by considering where the "starting and ending points of the experience" are. The display of search results is not the endpoint of the search action; rather, the search action continues until a link is clicked from the list of search results and the actual web page data is displayed. If you are delivering high-value content or providing sufficient information about products and services, yet your search ranking is not improving or is declining, it is likely that your display speed is slow. If you suspect that your display speed may be slow, I highly recommend measuring it at least once. 【Overview】 ■ "The field trip is not over until you get home." ■ The reason Google prioritizes display speed in determining search rankings. ■ Would you like to measure your display speed? *You can view the detailed content of the blog through the related links. For more information, please feel free to contact us.

  • Other information systems
  • Other network tools
  • Other analyses

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[Blog] Types of Websites

[Blog] Types of Websites

Choose from five types according to the desired results and specialize! Introduction to topics such as 'e-commerce sites'.

According to Google's digital marketing evangelist, all websites can be categorized into five types. E-commerce sites aim to increase the number of sales of products or services, while sites focused on lead generation aim to increase the number of inquiry form submissions. There are differences in goals based on the type of website. Unfortunately, it would be great if all five goals could be achieved with a single website, but that is quite difficult. Instead of being greedy and wanting "this and that," let's choose one necessary type of website for the current company and specialize in creating it. By doing so, it will become easier for people to understand, and the skills of the web manager will improve, leading to the development of a better website. *You can view the detailed content of the blog through the related links. For more information, please feel free to contact us.

  • Other information systems
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[Blog] "Correctness Harassment" and Engineering Ethics

[Blog] "Correctness Harassment" and Engineering Ethics

Training IT engineers is training specialists! If ethics and quality decline, the overall evaluation and trust in the industry will decrease.

In America, IT engineers, as well as other engineers and various professions, cannot enter their jobs without graduating from a specialized department at a university. I believe that the perception of criticism towards beginners' technical mistakes as "correctness harassment" is due to unique circumstances in Japan. When writing any technical article, one would have learned the conventions of technical writing by the time they graduate from an engineering department, and they would likely not make common mistakes typical of beginners. In America, there is a clear classification regarding engineers. [Overview (Partial)] ■ "Correctness Harassment"? ■ What is an Engineer? ■ IEA and the Seoul Agreement ■ What is Engineering? *You can view the detailed content of the blog through the related links. For more information, please feel free to contact us.

  • Other information systems
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[Blog] Introduction to Web Performance: Tips for Image Tuning

[Blog] Introduction to Web Performance: Tips for Image Tuning

Make images larger, more beautiful, yet lightweight! Introducing image optimization techniques on the blog.

Visual content is essential for modern websites, and even minimalist web design relies on sharp and beautiful images for a complete end-user experience. In recent years, screen sizes have diversified from smartphones to tablets, laptops to desktop PCs, making it important to use high-quality images that can be displayed correctly across various viewports. Images that are blurry or low-resolution can make a website's design look shabby, ultimately having a negative impact on the end-user experience. This article discusses major image optimization techniques. [Overview] ■ How to choose image formats ■ Image compression ■ Using CSS sprites ■ Adjusting image sizes to display sizes *For more details about the blog, please refer to the related links. Feel free to contact us for more information.

  • Other network tools
  • Other information systems
  • Other analyses

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[Blog] ICP License Required for Business Targeting China

[Blog] ICP License Required for Business Targeting China

The gradually clarified regulations in China! What has changed with Notice No. 264? Introducing it in the blog.

On November 27, 2017, the Ministry of Industry and Information Technology (MIIT) of the People's Republic of China issued an important notice regarding internet business in China. This is Circular 264. The implementation of this notice will take effect on January 1, 2018. This notice will have a significant impact on websites conducting business online in China, including manufacturing, cross-border e-commerce sites, hotels, and inns. [Overview] ■ What is ICP? ■ What is an ICP License? ■ What has changed with the Cybersecurity Law? ■ What has changed with Circular 264? ■ Measures for Circular 264 ■ Summary *For more detailed information, please refer to the related links. Feel free to contact us for further inquiries.

  • Other information systems
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[Blog] Response times surge due to AWS outage

[Blog] Response times surge due to AWS outage

Quickly detect AWS outages and issue alerts! Reasons to use tools other than vendor monitoring tools.

On August 31 (Tuesday), users in a wide area of the West Coast (US-West-2 region) were affected by a significant spike in response times. Among AWS's critical services, Lambda and Kinesis were impacted. The SRE team is concerned about service level indicators (SLIs) and service level objectives (SLOs), and this practice is essential for the SRE team. However, unlike Google, the founder of SRE, most companies rely on infrastructure and services from other providers like AWS and GCP, as well as multiple CDNs. In other words, it is not only necessary to have SLIs and SLOs for their own applications and services, but they also need to carefully evaluate their providers and vendors. *For more details, you can view the blog through the related link. Please feel free to contact us for more information.*

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