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Flutter 列表图片内存优化:CachedNetworkImage 与 ClipRRect 的取舍

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Flutter 列表图片滚动后内存攀升。作者对比 imageBuilder 与 ClipRRect,最终以少量 GPU 开销换取更稳定的内存表现。

Score: 57.31Confidence: 54%

【鸿蒙心迹】相册文搜图工程化落地:HarmonyOS 7.0 端侧 AI 检索全链路实战与 5 个踩坑解法

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相册里 3 万张照片,产品要"去年团建在海边那张",翻 40 分钟没找到。HarmonyOS 7.0 的文搜图能力(CoreVisionKit 的 textSearchImage)让用户用一句话定位照

Score: 57.29Confidence: 54%

Agent 系统工程 09|Agent 的可靠性怎么测?成功率、恢复能力与成本

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一个任务跑五次,只成功一次。开发者挑出成功的那条轨迹,觉得系统已经能用了;用户连试三次都没成,觉得它根本不可靠。 两边看到的现象可以同时成立,差别在于回答的问题不同:“有没有机会成功”和“每次交给它能

Score: 57.29Confidence: 54%

Agent 工具审批不止一个按钮:用 v0.22.1 复盘入口、恢复和副作用

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工具获批、Session 写入和 Shell 环境不是同一道门。用 Agents SDK v0.22.1 历史修复拆开审批、输入/输出检查、恢复不重跑与环境 allowlist;未做 SDK 实测。

Score: 57.28Confidence: 54%

OpenAI 就澳大利亚政府网站遭入侵致歉,承诺加快披露

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10 月 6 日,OpenAI 首席战略官 Jason Kwon 就其人工智能模型入侵澳大利亚政府网站一事再次致歉,承诺防范类似事件再次发生,若事件重演将更快作出回应。OpenAI 称 8 月发现入侵后至 9 月 10 日通知澳政府期间,一直在核实调查相关事实及遭访问的信息。Kwon 表示 OpenAI 正改进内部流程以加快此类信息披露,已在 AI 系统训练中增设监控,若模型不当访问互联网系统将发出通知暂停训练,同时公司支持各国政府建立强制性重大事故报告机制。

Score: 57.26Confidence: 54%

麦当劳在美遭集体诉讼,被指用 AI 系统非法操纵菜单价格

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麦当劳被提起拟议全国性集体诉讼,原告指控其借助人工智能定价系统非法协调特许经营店和直营餐厅的菜单价格,称麦当劳与独立特许经营商合谋利用非公开数据训练的算法操纵价格,违反美国反垄断法。麦当劳回应相关指控缺乏事实依据,称餐品价格并非由人工智能设定,各特许加盟商拥有定价决策权,相关定价推荐工具和数据分析手段已在各行业普遍使用。近年美国已出现多起指控企业利用算法或人工智能就多类消费品类开展非法价格协同的集体诉讼,本案原告希望代表数百万名麦当劳消费者发起诉讼。

Score: 57.26Confidence: 54%

本田等日本大型企业拟测试高速行驶时为电动汽车充电的系统

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包括本田在内的日本多家大型企业决定于明年开展高速公路行驶状态下电动汽车充电系统的技术验证测试。

Score: 57.25Confidence: 54%

[문제풀이] 문자열 겹쳐쓰기

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문제 문자열 겹쳐쓰기 문제 설명 문자열 my_string , overwrite_string 과 정수 s 가 주어집니다. 문자열 my_string 의 인덱스 s 부터 overwrite_string 의 길이만큼을 문자열 overwrite_string 으로 바꾼 문자열을 return 하는 solution 함수를 작성해 주세요. 제한사항 my_string 와 overwrite_string 은 숫자와 알파벳으로 이루어져 있습니다. $1 \leq$ overwrite_string 의 길이 $\leq$ my_string 의 길이 $\leq 1,000$ $0 \leq$ s $\leq$ my_string 의 길이 $-$ overwrite_string 의 길이 입출력 예시 |my_string|overwrite_string|s|result| |-|-| |"He11oWor1d"|"lloWorl"|2|"HelloWorld"| |"Program29b8UYP"|"merS123"|7|"ProgrammerS123"| 문제 풀이 s 부터 overwrite_string 는 결국 overwrite_string 이 되기 때문에 s 까지는 my_string 으로 하고 overwrite_string 을 넣고 s 부터 overwrite_string 이후에 다시 my_string 이 가면 됨. 첫 번째 예시를 보면 my_string[:2] = He overwrite_string = lloWorl overwrite_string 의 길이 = 7 $2 + 7 = 9$ 이므로 my_string[9:] = d my_string[:2] + overwrite_string + my_string[9:] = He + lloWorl + d = HelloWorld def solution(my_string, overwrite_string, s): length = len(overwrite_string) return my_string[:s] + overwrite_string + my_string[s + length:]

Score: 54.4Confidence: 49%

How Can Best Sod Installation Services in Alpharetta, GA Improve Your Lawn?

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A healthy lawn can make an outdoor property more attractive, functional, and comfortable. However, creating a dense lawn requires more than placing grass over bare soil. Soil preparation, grading, soil drainage , grass selection, installation technique, watering, and follow-up care all influence how successfully new turf becomes established. For property owners researching Best Sod Installation Services in Alpharetta, GA, understanding the complete installation process can make it easier to plan a lawn improvement project. Sod provides an established layer of grass that can create a finished appearance much faster than starting a lawn entirely from seed, but the underlying soil and early maintenance still play important roles. Why Do Property Owners Choose Sod? Sod can be useful when a property owner wants to establish a lawn without waiting for grass seed to germinate and gradually fill an area. Rolls or sections of living turf are installed across prepared soil, creating a relatively immediate lawn surface. This approach can be considered for several situations. A newly constructed property may have bare soil, an existing lawn may have extensive thin or damaged areas, or a homeowner may want to replace an unsuccessful lawn. Sod can also provide more predictable initial coverage than scattered seed. However, installation should not be viewed as simply placing grass on top of the ground. The condition of the soil underneath remains important to long-term lawn health. What Should Be Evaluated Before Sod Installation? The first step should be evaluating the property. Different yards can have different amounts of sunlight, soil conditions, slopes, drainage patterns, and existing vegetation. A site assessment can identify areas that may require additional preparation before sod is installed. Important considerations include: • Existing grass or weeds • Soil condition • Compaction • Drainage • Property slope • Sunlight exposure • Irrigation access • Walkways and hardscapes • Trees and existing landscape features • Type of grass appropriate for the site Understanding these factors helps prevent problems that might otherwise appear after installation. Why Is Soil Preparation So Important? Sod needs contact with suitable soil so its roots can begin growing into the ground. If the underlying soil is heavily compacted, uneven, excessively dry, or poorly drained, the new turf may struggle to establish. Preparation can involve removing unwanted vegetation, loosening compacted soil, correcting low or uneven areas, and incorporating suitable soil amendments when necessary. The objective is to create a reasonably level and supportive growing surface. Soil preparation should be based on the actual condition of the property rather than applying the same process to every yard. A prepared soil surface can also make installation easier because sod sections can sit more evenly and maintain better contact with the ground. How Does Grading Affect a New Lawn? Grading influences how water moves across a property. Poor grading can leave some areas excessively wet while other sections become too dry. Before installing sod, property owners should look for areas where rainwater collects or flows toward structures. Low spots may require correction, while slopes may need careful consideration to reduce erosion. A lawn does not necessarily need to be perfectly flat. The important consideration is whether the finished grade supports appropriate drainage and creates a practical surface for mowing and everyday use. Correct grading can also help the finished lawn transition smoothly into driveways, walkways, planting beds, and other landscape features. Which Sod Type Should Be Selected? Choosing the right grass is one of the most important decisions in a sod project. Different turf varieties have different requirements for sunlight, water, temperature, maintenance, and traffic. Warm-season grasses commonly considered for Georgia properties include Bermuda and Zoysia. Tall Fescue may be considered for locations with greater shade tolerance requirements, depending on site conditions and the property owner's goals. Bermuda generally performs well in sunny conditions and can tolerate substantial activity when properly maintained. Zoysia can provide dense turf and may offer greater tolerance of partial shade than some warm-season alternatives. Fescue has different growth characteristics and is often considered where shade is a significant factor. The correct choice should depend on the actual conditions of the yard rather than simply selecting the most popular grass. Why Does Sunlight Matter? Grass requires appropriate light to maintain healthy growth. A lawn beneath mature trees may receive considerably less direct sunlight than an open front yard. Before choosing sod, property owners should observe how sunlight changes throughout the day and across different seasons. If a grass variety requires more sunlight than the property provides, thinning or weak growth may develop over time. Shade can also change as trees mature. Therefore, a planting and lawn plan should consider both current and future conditions. How Is Sod Installed? Once the site has been prepared and the appropriate sod has been selected, installation can begin. Sod sections should be placed closely together without creating large gaps between pieces. Seams should be arranged carefully so the edges do not form continuous lines across the lawn. Sod may need to be trimmed around trees, planting beds, sidewalks, irrigation features, and other obstacles. The turf should maintain good contact with the prepared soil. Rolling may be used after installation to improve contact and reduce air pockets. The finished surface should then receive appropriate initial watering according to the grass type, weather, soil condition, and installation circumstances. How Important Is Watering After Installation? Watering is one of the most important parts of early sod establishment. Newly installed turf has not yet developed an extensive root system within the underlying soil. The objective is to keep the root zone adequately moist without creating prolonged saturation. Watering needs can change according to temperature, rainfall, soil type, grass variety, and exposure to sunlight. A newly installed lawn may require more frequent attention during its establishment period than an established lawn. Property owners should monitor the soil and turf instead of relying on a fixed schedule regardless of weather. Too little water can cause drying and stress, while excessive watering can contribute to drainage and root problems. When Can New Sod Be Mowed? Mowing should generally wait until the new grass has developed sufficient roots to remain firmly established. Walking repeatedly across freshly installed sod can disturb the pieces before they have rooted properly. Similarly, mowing too early may pull or shift sections of turf. The appropriate timing depends on the grass type, weather, installation conditions, and rate of establishment. When mowing begins, the mower should be properly maintained and the cutting height should be appropriate for the selected turf variety. What Maintenance Does New Sod Need? Sod installation is the beginning of lawn care rather than the end. After establishment, the lawn may require regular mowing, watering, fertilization, weed management, aeration, and observation for potential pest or disease problems. Maintenance requirements vary by grass type. Warm-season turf typically follows a different growth cycle from cool-season turf. Property owners should also monitor areas around trees and structures because shade, root competition, and drainage changes can influence lawn performance. Consistent maintenance is generally more effective than waiting until the lawn develops significant problems. What Are Common Sod Installation Mistakes? Several mistakes can reduce the success of a new lawn. One common mistake is skipping soil preparation. Even high-quality sod may struggle when installed over compacted or unsuitable soil. Another mistake is selecting grass based only on appearance. A visually attractive turf variety may not perform well in a heavily shaded or poorly drained location. Improper grading can create standing water or uneven surfaces. Incorrect watering can also stress newly installed turf. Installing sod with large gaps between sections can leave visible seams and allow weeds to develop between pieces. Finally, excessive foot traffic immediately after installation can disturb the turf before roots become established. How Can Property Owners Prepare for Installation? Preparation can make the installation process more efficient. Property owners can remove movable outdoor furniture, identify irrigation components, and discuss drainage concerns before work begins. If an existing lawn is being replaced, unwanted vegetation may need to be removed. Trees, landscape beds, fences, and walkways should also be identified so the installation plan accounts for them. Property owners should also consider how the finished lawn will be used. A yard intended for children, pets, entertaining, or frequent foot traffic may require different turf considerations from a primarily decorative lawn. Should Existing Drainage Problems Be Fixed First? Yes, drainage deserves attention before installing new sod. Best Sod Installation Services in Alpharetta, GA can help property owners consider site conditions and identify whether drainage issues should be addressed before new turf is installed. If water consistently collects in certain areas, simply covering the ground with new turf may not solve the underlying problem. Drainage concerns can result from grading, compacted soil, downspout discharge, landscape features, or natural site conditions. Addressing the source of recurring water problems before installation can help protect the investment in new turf. How Can Sod Improve an Existing Landscape? A new l

凯博国际咨询上线客服飞机:@stszh223

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Score: 54.4Confidence: 49%

Brian Ladin Discusses the Growing Role of Environmental Sustainability in the Modern Global Shipping Industry

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The global shipping industry is an important part of international trade, transporting goods between countries and connecting businesses across the world. As the industry continues to grow, environmental sustainability has become an increasingly important consideration. Brian Ladin has discussed how shipping companies can adopt more efficient practices and technologies to reduce their environmental impact. Environmental Sustainability in the Modern Shipping Industr One important area of focus is improving vessel efficiency. Modern ship designs, improved hull structures, better propulsion systems, and regular maintenance can help reduce fuel consumption. Using less fuel can lower operating costs while also reducing emissions from commercial vessels. Another approach is slow steaming, which involves operating vessels at lower speeds to reduce fuel consumption and emissions during long-distance voyages. Although slower speeds may require changes to transportation schedules, they can provide an effective way for shipping companies to improve overall fuel efficiency. Become a Medium member The development of cleaner marine fuels is also becoming increasingly important. LNG has been explored as an alternative fuel for certain vessels, while the industry continues to investigate other low-carbon and renewable fuel options. These developments could play an important role in reducing the environmental impact of maritime transportation. Technology can also support more sustainable shipping operations. Digital monitoring systems can help operators track fuel consumption, vessel performance, and voyage efficiency. Better data allows shipping companies to identify areas where energy can be saved and operations can be improved. Sustainability also extends beyond the vessels themselves. More efficient supply-chain planning can help reduce unnecessary journeys and improve the movement of containers. Reducing empty container transportation can save fuel and make global shipping operations more efficient. According to discussions by Brian Ladin, environmental responsibility and business efficiency can work together. Many improvements that reduce fuel consumption can also help shipping companies lower operating expenses and improve their long-term performance. As environmental standards continue to develop, shipping companies are likely to invest further in cleaner fuels, efficient vessels, digital technologies, and improved operational practices. These changes can help the maritime industry respond to environmental challenges while continuing to support international trade. Brian Ladin’s views highlight the growing importance of combining innovation, efficiency, and environmental responsibility in modern shipping. With continued investment and technological development, the global shipping industry can work toward a more sustainable and efficient future. Brian Ladin

[LG CNS AM INSPIRE CAMP 6기] DAY 38 - Spring Cloud Gateway 실습

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🎯 핵심 키워드 키워드 내용 API Gateway 클라이언트의 요청을 받아 라우팅, 인증, 권한 부여, 부하 분산(Load Balancing), 로깅 등 공통 기능(횡단 관심사)을 수행하는 최전방 프록시 서버 Spring Cloud Gateway Spring 진영의 비동기 (Non-blocking) 방식 게이트웨이 WebFlux 기반으로 적은 스레드로 많은 요청을 처리할 수 있다. Route / Predicate / Filter - Route : 목적지 URL(uri) 설정 - Predicate : 조건식 ( ex. Path=/first-service/** ) - Filter : 요청/응답을 가로채어 조작(Header 추가, 인증, 로깅 등)하는 컴포넌트 Load Balancing (lb://) 유레카(Eureka)에 등록된 다수의 서비스 인스턴스(서버) 중 트래픽을 분산시켜 주는 기능 📖 오늘 배운 내용 1. API Gateway 동작 및 Filter 흐름 분석 API Gateway 역할 ↓ Spring Cloud Gateway ↓ Route / Predicate ↓ Request / Response Filter ↓ Custom Filter ↓ Global Filter ↓ Eureka 연동 ↓ Service Name 기반 Routing ↓ Load Balancing [Filter 동작 순서 상세 (Pre & Post)] 게이트웨이는 비즈니스 로직(마이크로서비스)을 호출하기 전/후에 필터를 거친다. Request(요청) 방향 (Pre Filter) : Client ➔ Global Pre ➔ Custom Pre ➔ Logging Pre ➔ Business Logic(Microservice) Response(응답) 방향 (Post Filter) : Business Logic ➔ Logging Post ➔ Custom Post ➔ Global Post ➔ Client 2. Spring Cloud Gateway 설정 및 유레카 연동 (apigateway-service) 게이트웨이 자체도 유레카 클라이언트로 등록되어야 하며, 들어오는 요청을 lb:// 프로토콜을 통해 유레카에 등록된 서비스 이름(Service Name)으로 라우팅해야 로드 밸런싱이 동작한다 [application.yml 설정] server: port: 8000 # 게이트웨이는 고정 포트(8000) 사용 eureka: client: register-with-eureka: true fetch-registry: true service-url: defaultZone: http://localhost:8761/eureka instance: prefer-ip-address: true # 호스트명 대신 IP로 등록 spring: application: name: apigateway-service cloud: gateway: default-filters: # Global Filter 설정 (모든 라우트에 공통 적용) - name: GlobalFilter args: baseMessage: Spring Cloud Gateway Webflux Global Filter preLogger: true postLogger: true routes: - id: first-service # uri: http://localhost:8081/ (직접 호출 방식은 주석 처리) uri: lb://MY-FIRST-SERVICE # 유레카 연동: lb://서비스이름 (로드 밸런싱) predicates: - Path=/first-service/** filters: - CustomFilter - id: second-service uri: lb://MY-SECOND-SERVICE predicates: - Path=/second-service/** filters: - name: CustomFilter - name: LoggingFilter # Logging Filter 추가 args: baseMessage: Hi, there. preLogger: true postLogger: true 3. Filter 구현 (Global, Custom, Logging) Spring Cloud Gateway의 필터는 AbstractGatewayFilterFactory를 상속받아 구현한다. * 1. Global Filter * 모든 라우팅에 기본적으로 적용되는 필터 @Component @Slf4j public class GlobalFilter extends AbstractGatewayFilterFactory<GlobalFilter.Config> { // ... 생성자 생략 ... @Override public GatewayFilter apply(Config config) { return (exchange, chain) -> { ServerHttpRequest request = exchange.getRequest(); ServerHttpResponse response = exchange.getResponse(); // Custom Pre Filter: 인증 검사, 헤더추가, 로깅 등을 여기서 처리 log.info("Global Filter baseMessage: {}, {}", config.getBaseMessage(), request.getRemoteAddress()); if (config.isPreLogger()) { log.info("Global Filter Start: request id -> {}", request.getId()); } // Custom Post Filter: 체인이 끝난 후 비동기로 실행 return chain.filter(exchange).then(Mono.fromRunnable(() -> { if (config.isPostLogger()) { log.info("Global Filter End: response code -> {}", response.getStatusCode()); } })); }; } // ... Config 클래스 생략 ... } 2. Logging Filter와 우선순위(Ordered) 특정 라우트에만 적용되는 필터이며, OrderedGatewayFilter를 사용해 필터의 실행 순서를 강제로 지정할 수 있다 @Component @Slf4j public class LoggingFilter extends AbstractGatewayFilterFactory<LoggingFilter.Config> { // ... 생략 ... /* 우선 순위를 갖는 Logging Filter 적용 */ @Override public GatewayFilter apply(Config config) { OrderedGatewayFilter filter = new OrderedGatewayFilter((exchange, chain) -> { // ... (Pre/Post 로깅 로직은 Global Filter와 유사) ... return chain.filter(exchange).then(Mono.fromRunnable(() -> { if (config.isPostLogger()) { log.info("Logging Filter End: response code -> {}", response.getStatusCode()); } })); }, Ordered.HIGHEST_PRECEDENCE); // 가장 먼저(Highest) 실행되도록 우선순위 강제 조정 return filter; } } 4. Microservice 연동 및 Load Balancing 테스트 First Service와 Second Service를 각각 여러 대(포트 0 랜덤) 띄운 후, http://localhost:8000 (gateway) 를 통해 요청을 보냈을 때 로드 밸런싱이 되는지 확인했다 [Microservice application.yml] server: port: 0 # 랜덤 포트 설정 spring: application: name: my-second-service # 유레카에 등록될 서비스명 (게이트웨이의 lb:// 주소와 매칭됨) eureka: instance: # 고유 식별자를 부여하여 다중 인스턴스가 유레카에 개별적으로 등록되게 함 instance-id: ${spring.cloud.client.ip-address}:${spring.application.instance_id:${random.value}} [테스트 결과] Postman을 이용해 GET http://localhost:8000/first-service/check 형식으로 Gateway에 요청을 여러 번 보내면, 게이트웨이가 유레카에서 서비스 인스턴스 목록을 받아와 라운드 로빈(Round Robin) 방식 으로 포트를 번갈아가며(ex: 52887 ➔ 52888) 응답하는 것을 확인할 수 있었다. 이는 Gateway와 Eureka를 통한 완벽한 로드 밸런싱이 수행됨을 의미한다